CVE-2026-49759 (GCVE-0-2026-49759)
Vulnerability from cvelistv5 – Published: 2026-06-10 14:35 – Updated: 2026-09-24 20:41
VLAI
EPSS
VEX
Title
Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash
Summary
Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.
The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.
A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.
This issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 16:18 UTC
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-49759.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-49759 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/3983d4952843… | patch |
| https://access.redhat.com/security/cve/CVE-2026-49759 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2487607 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
6 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Erlang | OTP |
Affected:
17.0 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Affected:
6.0 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Affected:
84adefa331c4159d432d22840663c38f155cd4c1 , < 3983d495284331c121f600a80bac9fcf4e16381e
(git)
Unaffected: 3983d495284331c121f600a80bac9fcf4e16381e , < * (git) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Red Hat | Red Hat OpenStack Platform 16.2 |
cpe:/a:redhat:openstack:16.2
|
||
| Red Hat | Red Hat OpenStack Platform 17.1 |
cpe:/a:redhat:openstack:17.1
|
||
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0
|
Date Public
2026-06-10 14:35
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-49759",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:18:27.945916Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T16:18:43.800Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:16.2"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 16.2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:17.1"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 17.1",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:18.0"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 18.0",
"vendor": "Red Hat"
}
],
"datePublic": "2026-06-10T14:35:38.838Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Erlang OTP (Open Telecom Platform) erts, specifically within the `inet_drv` component. An unauthenticated remote attacker can exploit a stack-based buffer overflow vulnerability by sending a specially crafted Stream Control Transmission Protocol (SCTP) ERROR chunk. This can lead to a Denial of Service (DoS) by crashing the BEAM virtual machine. Additionally, this flaw may result in limited information disclosure by leaking small portions of Erlang VM memory."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-120",
"description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T12:04:38.340Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-49759"
},
{
"name": "RHBZ#2487607",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487607"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-10T16:01:51.030Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-06-10T14:35:38.838Z",
"value": "Made public."
}
],
"title": "erlang: Erlang OTP: Denial of Service via crafted SCTP ERROR chunk",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "17.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erts",
"packageURL": "pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "15.2.7.9",
"status": "unaffected"
},
{
"at": "16.4.0.2",
"status": "unaffected"
},
{
"at": "17.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "6.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "3983d495284331c121f600a80bac9fcf4e16381e",
"status": "affected",
"version": "84adefa331c4159d432d22840663c38f155cd4c1",
"versionType": "git"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "3983d495284331c121f600a80bac9fcf4e16381e",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eSCTP support must be compiled into OTP. A listening SCTP socket must be opened via \u003ccode\u003egen_sctp\u003c/code\u003e with the default \u003ccode\u003einet\u003c/code\u003e backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via `gen_sctp` with the default `inet` backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
}
],
"value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via gen_sctp with the default inet backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "27.3.4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Zhang Delong"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Raimo Niskanen"
}
],
"datePublic": "2026-06-10T14:35:38.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eStack-based Buffer Overflow vulnerability in Erlang OTP \u003ccode\u003eerts\u003c/code\u003e (\u003ccode\u003einet_drv\u003c/code\u003e) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003esctp_parse_error_chunk\u003c/code\u003e function in \u003ccode\u003eerts/emulator/drivers/common/inet_drv.c\u003c/code\u003e parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated \u003ccode\u003eErlDrvTermData spec[]\u003c/code\u003e array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\u003c/p\u003e\n\u003cp\u003eA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;17.0 before OTP\u0026nbsp;27.3.4.13, OTP\u0026nbsp;28.5.0.2, and OTP\u0026nbsp;29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u0026nbsp;17.0, corresponding to erts before 6.0, is affected is unknown.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Stack-based Buffer Overflow vulnerability in Erlang OTP `erts` (`inet_drv`) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe `sctp_parse_error_chunk` function in `erts/emulator/drivers/common/inet_drv.c` parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated `ErlDrvTermData spec[]` array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
}
],
"value": "Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
}
],
"impacts": [
{
"capecId": "CAPEC-100",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-100 Overflow Buffers"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "CWE-121 Stack-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T20:41:04.351Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"
},
{
"name": "EEF CNA record for CVE-2026-49759",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-49759.html"
},
{
"name": "OSV record EEF-CVE-2026-49759",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-49759"
},
{
"name": "Erlang/OTP version ordering",
"tags": [
"x_version-scheme"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"name": "Fix commit 3983d49 in erlang/otp",
"tags": [
"patch"
],
"url": "https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-49759",
"datePublished": "2026-06-10T14:35:38.838Z",
"dateReserved": "2026-06-01T13:45:22.449Z",
"dateUpdated": "2026-09-24T20:41:04.351Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-49759",
"date": "2026-10-30",
"epss": "0.00497",
"percentile": "0.42622"
},
"microsoft_vex": {
"current_release_date": "2026-06-18T14:42:54.000Z",
"cve": "CVE-2026-49759",
"id": "msrc_CVE-2026-49759",
"initial_release_date": "2026-06-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-49759.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "17.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erts",
"packageURL": "pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "15.2.7.9",
"status": "unaffected"
},
{
"at": "16.4.0.2",
"status": "unaffected"
},
{
"at": "17.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "6.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "3983d495284331c121f600a80bac9fcf4e16381e",
"status": "affected",
"version": "84adefa331c4159d432d22840663c38f155cd4c1",
"versionType": "git"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "3983d495284331c121f600a80bac9fcf4e16381e",
"versionType": "git"
}
]
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
},
{
"affectedData": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:16.2"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 16.2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:17.1"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 17.1",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:18.0"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 18.0",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BF42A5F2-4C27-43FE-B5FA-17A3422B9649",
"versionEndExcluding": "27.3.4.13",
"versionStartIncluding": "17.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "902ED4C3-B9DE-4ABC-9BEA-D23DA4F5D373",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F4AB1573-4E81-4338-B65A-B3C94C7249FA",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erts:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EAB60C9A-F1B2-4377-8C9B-B8496D3D9B5C",
"versionEndExcluding": "15.2.7.9",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erts:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0778AFBA-F21F-4394-AA3A-38784D379BEB",
"versionEndExcluding": "16.4.0.2",
"versionStartIncluding": "16.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erts:*:*:*:*:*:*:*:*",
"matchCriteriaId": "05F0E6B1-0DA3-4A0B-8C89-8DFC55EC7C8B",
"versionEndExcluding": "17.0.2",
"versionStartIncluding": "17.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
},
{
"lang": "es",
"value": "Una vulnerabilidad de desbordamiento de b\u00fafer basado en pila en Erlang OTP erts (inet_drv) permite a un atacante remoto no autenticado bloquear la VM BEAM enviando un fragmento SCTP ERROR manipulado.\n\nLa funci\u00f3n sctp_parse_error_chunk en erts/emulator/drivers/common/inet_drv.c analiza fragmentos SCTP ERROR y escribe c\u00f3digos de causa en un array ErlDrvTermData spec[] de tama\u00f1o fijo asignado en pila sin comprobar los l\u00edmites. Un atacante remoto que ha establecido una asociaci\u00f3n SCTP a un puerto de escucha puede enviar un \u00fanico fragmento SCTP ERROR manipulado que contenga suficientes c\u00f3digos de causa para desbordar el b\u00fafer de pila, bloqueando la VM. El atacante solo puede escribir valores de 16 bits intercalados con una etiqueta fija, por lo que el desbordamiento no proporciona una direcci\u00f3n de retorno controlada, limitando la explotaci\u00f3n a Denegaci\u00f3n de Servicio.\n\nUn fragmento SCTP ERROR manipulado tambi\u00e9n puede filtrar fragmentos de memoria de la VM de Erlang en el paquete de error recibido observado por el proceso Erlang. Dichos datos ya son legibles por el usuario que ejecuta la VM de Erlang, por lo que el alcance de la divulgaci\u00f3n es limitado.\n\nEste problema afecta a OTP desde OTP 17.0 antes de 27.3.4.13, 28.5.0.2 y 29.0.2, correspondiente a erts desde 6.0 antes de 15.2.7.9, 16.4.0.2 y 17.0.2."
}
],
"id": "CVE-2026-49759",
"lastModified": "2026-10-26T11:10:00.157",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.2,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.2,
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-49759",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:18:27.945916Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-10T16:17:12.797",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Third Party Advisory"
],
"url": "https://cna.erlef.org/cves/CVE-2026-49759.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Patch"
],
"url": "https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Third Party Advisory"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-49759"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Product"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/security/cve/CVE-2026-49759"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487607"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-121"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-120"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-09-21T10:36:47+00:00",
"cve": "CVE-2026-49759",
"id": "CVE-2026-49759",
"initial_release_date": "2026-06-10T14:35:38.838000+00:00",
"product_status:fixed": "79",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "erlang: Erlang OTP: Denial of Service via crafted SCTP ERROR chunk",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:16.2"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 16.2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:17.1"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 17.1",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openstack:18.0"
],
"defaultStatus": "unaffected",
"packageName": "erlang",
"product": "Red Hat OpenStack Platform 18.0",
"vendor": "Red Hat"
}
],
"datePublic": "2026-06-10T14:35:38.838Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Erlang OTP (Open Telecom Platform) erts, specifically within the `inet_drv` component. An unauthenticated remote attacker can exploit a stack-based buffer overflow vulnerability by sending a specially crafted Stream Control Transmission Protocol (SCTP) ERROR chunk. This can lead to a Denial of Service (DoS) by crashing the BEAM virtual machine. Additionally, this flaw may result in limited information disclosure by leaking small portions of Erlang VM memory."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-120",
"description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T12:04:38.340Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-49759"
},
{
"name": "RHBZ#2487607",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487607"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-10T16:01:51.030Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-06-10T14:35:38.838Z",
"value": "Made public."
}
],
"title": "erlang: Erlang OTP: Denial of Service via crafted SCTP ERROR chunk",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-49759",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:18:27.945916Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T16:18:35.355Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "17.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erts",
"packageURL": "pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "15.2.7.9",
"status": "unaffected"
},
{
"at": "16.4.0.2",
"status": "unaffected"
},
{
"at": "17.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "6.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"inet_drv"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/drivers/common/inet_drv.c"
],
"programRoutines": [
{
"name": "sctp_parse_error_chunk"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "3983d495284331c121f600a80bac9fcf4e16381e",
"status": "affected",
"version": "84adefa331c4159d432d22840663c38f155cd4c1",
"versionType": "git"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "3983d495284331c121f600a80bac9fcf4e16381e",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eSCTP support must be compiled into OTP. A listening SCTP socket must be opened via \u003ccode\u003egen_sctp\u003c/code\u003e with the default \u003ccode\u003einet\u003c/code\u003e backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via `gen_sctp` with the default `inet` backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
}
],
"value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via gen_sctp with the default inet backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "27.3.4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Zhang Delong"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Raimo Niskanen"
}
],
"datePublic": "2026-06-10T14:35:38.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eStack-based Buffer Overflow vulnerability in Erlang OTP \u003ccode\u003eerts\u003c/code\u003e (\u003ccode\u003einet_drv\u003c/code\u003e) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003esctp_parse_error_chunk\u003c/code\u003e function in \u003ccode\u003eerts/emulator/drivers/common/inet_drv.c\u003c/code\u003e parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated \u003ccode\u003eErlDrvTermData spec[]\u003c/code\u003e array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\u003c/p\u003e\n\u003cp\u003eA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;17.0 before OTP\u0026nbsp;27.3.4.13, OTP\u0026nbsp;28.5.0.2, and OTP\u0026nbsp;29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u0026nbsp;17.0, corresponding to erts before 6.0, is affected is unknown.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Stack-based Buffer Overflow vulnerability in Erlang OTP `erts` (`inet_drv`) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe `sctp_parse_error_chunk` function in `erts/emulator/drivers/common/inet_drv.c` parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated `ErlDrvTermData spec[]` array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
}
],
"value": "Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
}
],
"impacts": [
{
"capecId": "CAPEC-100",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-100 Overflow Buffers"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "CWE-121 Stack-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T20:41:04.351Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"
},
{
"name": "EEF CNA record for CVE-2026-49759",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-49759.html"
},
{
"name": "OSV record EEF-CVE-2026-49759",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-49759"
},
{
"name": "Erlang/OTP version ordering",
"tags": [
"x_version-scheme"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"name": "Fix commit 3983d49 in erlang/otp",
"tags": [
"patch"
],
"url": "https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-49759",
"datePublished": "2026-06-10T14:35:38.838Z",
"dateReserved": "2026-06-01T13:45:22.449Z",
"dateUpdated": "2026-09-24T20:41:04.351Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.