Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
15264 vulnerabilities reference this CWE, most recent first.
GHSA-PF6M-FXPQ-FG8V
Vulnerability from github – Published: 2018-07-31 18:21 – Updated: 2023-07-03 23:57
VLAI
Summary
Nokogiri implementation of libxslt lacks integer overflow checks
Details
The xsltAddTextString function in transform.c in libxslt 1.1.29, as used in Nokogiri prior to 1.7.2, lacked a check for integer overflow during a size calculation, which allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.
Severity
8.8 (High)
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "nokogiri"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2017-5029"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:48:58Z",
"nvd_published_at": "2017-04-24T23:59:00Z",
"severity": "HIGH"
},
"details": "The xsltAddTextString function in transform.c in libxslt 1.1.29, as used in Nokogiri prior to 1.7.2, lacked a check for integer overflow during a size calculation, which allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.",
"id": "GHSA-pf6m-fxpq-fg8v",
"modified": "2023-07-03T23:57:14Z",
"published": "2018-07-31T18:21:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-5029"
},
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/issues/1634"
},
{
"type": "WEB",
"url": "https://git.gnome.org/browse/libxslt/commit/?id=08ab2774b870de1c7b5a48693df75e8154addae5"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-pf6m-fxpq-fg8v"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2017-5029.yml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sparklemotion/nokogiri"
},
{
"type": "WEB",
"url": "https://ubuntu.com/security/CVE-2017-5029"
},
{
"type": "WEB",
"url": "https://ubuntu.com/security/notices/USN-3271-1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Nokogiri implementation of libxslt lacks integer overflow checks"
}
GHSA-PF76-R749-M2HH
Vulnerability from github – Published: 2026-07-14 15:32 – Updated: 2026-07-15 15:32
VLAI
Details
A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-8312"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T13:19:10Z",
"severity": "HIGH"
},
"details": "A security issue exists within Arena\u00ae Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file.",
"id": "GHSA-pf76-r749-m2hh",
"modified": "2026-07-15T15:32:47Z",
"published": "2026-07-14T15:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8312"
},
{
"type": "WEB",
"url": "https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1784.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/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",
"type": "CVSS_V4"
}
]
}
GHSA-PF78-R4PC-W83F
Vulnerability from github – Published: 2022-05-17 03:29 – Updated: 2022-05-17 03:29
VLAI
Details
Adobe Flash Player before 18.0.0.329 and 19.x and 20.x before 20.0.0.306 on Windows and OS X and before 11.2.202.569 on Linux, Adobe AIR before 20.0.0.260, Adobe AIR SDK before 20.0.0.260, and Adobe AIR SDK & Compiler before 20.0.0.260 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2016-0964, CVE-2016-0965, CVE-2016-0966, CVE-2016-0967, CVE-2016-0968, CVE-2016-0969, CVE-2016-0970, CVE-2016-0972, CVE-2016-0977, CVE-2016-0978, CVE-2016-0979, CVE-2016-0980, and CVE-2016-0981.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2016-0976"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-02-10T20:59:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Flash Player before 18.0.0.329 and 19.x and 20.x before 20.0.0.306 on Windows and OS X and before 11.2.202.569 on Linux, Adobe AIR before 20.0.0.260, Adobe AIR SDK before 20.0.0.260, and Adobe AIR SDK \u0026 Compiler before 20.0.0.260 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2016-0964, CVE-2016-0965, CVE-2016-0966, CVE-2016-0967, CVE-2016-0968, CVE-2016-0969, CVE-2016-0970, CVE-2016-0972, CVE-2016-0977, CVE-2016-0978, CVE-2016-0979, CVE-2016-0980, and CVE-2016-0981.",
"id": "GHSA-pf78-r4pc-w83f",
"modified": "2022-05-17T03:29:30Z",
"published": "2022-05-17T03:29:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-0976"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/flash-player/apsb16-04.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201603-07"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00025.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00027.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00029.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00030.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-0166.html"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1034970"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF7G-97VV-QMRR
Vulnerability from github – Published: 2023-02-23 21:30 – Updated: 2025-03-12 21:31
VLAI
Details
GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-3219"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-23T20:15:00Z",
"severity": "MODERATE"
},
"details": "GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.",
"id": "GHSA-pf7g-97vv-qmrr",
"modified": "2025-03-12T21:31:27Z",
"published": "2023-02-23T21:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3219"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2022-3219"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2127010"
},
{
"type": "WEB",
"url": "https://dev.gnupg.org/D556"
},
{
"type": "WEB",
"url": "https://dev.gnupg.org/T5993"
},
{
"type": "WEB",
"url": "https://marc.info/?l=oss-security\u0026m=165696590211434\u0026w=4"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230324-0001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF8M-6MX3-9XPJ
Vulnerability from github – Published: 2022-11-01 12:00 – Updated: 2022-11-01 19:00
VLAI
Details
Out of bounds write in V8 in Google Chrome prior to 106.0.5249.91 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-3373"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-01T03:15:00Z",
"severity": "HIGH"
},
"details": "Out of bounds write in V8 in Google Chrome prior to 106.0.5249.91 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.",
"id": "GHSA-pf8m-6mx3-9xpj",
"modified": "2022-11-01T19:00:28Z",
"published": "2022-11-01T12:00:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3373"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2022/09/stable-channel-update-for-desktop_30.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1366399"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF98-HX9M-QJ7W
Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2024-04-12 00:30
VLAI
Details
In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2019-13132"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-10T19:15:00Z",
"severity": "CRITICAL"
},
"details": "In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.",
"id": "GHSA-pf98-hx9m-qj7w",
"modified": "2024-04-12T00:30:25Z",
"published": "2022-05-24T16:49:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13132"
},
{
"type": "WEB",
"url": "https://github.com/zeromq/libzmq/issues/3558"
},
{
"type": "WEB",
"url": "https://fangpenlin.com/posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-mostly-pure-luck"
},
{
"type": "WEB",
"url": "https://github.com/zeromq/libzmq/releases"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C6Y6NDILI3"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE7YK6ZSHVS"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGTZWEFOOL7X"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C6Y6NDILI3"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE7YK6ZSHVS"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGTZWEFOOL7X"
},
{
"type": "WEB",
"url": "https://news.ycombinator.com/item?id=39970716"
},
{
"type": "WEB",
"url": "https://seclists.org/bugtraq/2019/Jul/13"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201908-17"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4050-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2019/dsa-4477"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00033.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/07/08/6"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/109284"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PF9F-FX8V-XGX8
Vulnerability from github – Published: 2025-05-11 21:30 – Updated: 2025-05-11 21:30
VLAI
Details
A vulnerability was found in D-Link DI-8100 up to 16.07.26A1 and classified as critical. This issue affects some unknown processing of the file /ddos.asp of the component jhttpd. The manipulation of the argument def_max/def_time/def_tcp_max/def_tcp_time/def_udp_max/def_udp_time/def_icmp_max leads to stack-based buffer overflow. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-4544"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-11T19:15:50Z",
"severity": "HIGH"
},
"details": "A vulnerability was found in D-Link DI-8100 up to 16.07.26A1 and classified as critical. This issue affects some unknown processing of the file /ddos.asp of the component jhttpd. The manipulation of the argument def_max/def_time/def_tcp_max/def_tcp_time/def_udp_max/def_udp_time/def_icmp_max leads to stack-based buffer overflow. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult.",
"id": "GHSA-pf9f-fx8v-xgx8",
"modified": "2025-05-11T21:30:31Z",
"published": "2025-05-11T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4544"
},
{
"type": "WEB",
"url": "https://github.com/Yhuanhuan01/DI-8100_Vulnerability_Report/blob/main/Vulnerability_Report.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.308291"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.308291"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.562695"
},
{
"type": "WEB",
"url": "https://www.dlink.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/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",
"type": "CVSS_V4"
}
]
}
GHSA-PF9J-CG8H-RVWH
Vulnerability from github – Published: 2022-05-14 02:15 – Updated: 2022-05-14 02:15
VLAI
Details
The NetStream class in Adobe Flash Player before 10.3.183.18 and 11.x before 11.2.202.228 on Windows, Mac OS X, and Linux; Flash Player before 10.3.183.18 and 11.x before 11.2.202.223 on Solaris; Flash Player before 11.1.111.8 on Android 2.x and 3.x; and AIR before 3.2.0.2070 allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2012-0773"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-03-28T19:55:00Z",
"severity": "HIGH"
},
"details": "The NetStream class in Adobe Flash Player before 10.3.183.18 and 11.x before 11.2.202.228 on Windows, Mac OS X, and Linux; Flash Player before 10.3.183.18 and 11.x before 11.2.202.223 on Solaris; Flash Player before 11.1.111.8 on Android 2.x and 3.x; and AIR before 3.2.0.2070 allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors.",
"id": "GHSA-pf9j-cg8h-rvwh",
"modified": "2022-05-14T02:15:28Z",
"published": "2022-05-14T02:15:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-0773"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15391"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16157"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00017.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00018.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/48618"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/48652"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/48819"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-201204-07.xml"
},
{
"type": "WEB",
"url": "http://www.adobe.com/support/security/bulletins/apsb12-07.html"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1026859"
},
{
"type": "WEB",
"url": "http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-PF9Q-2FF3-67R4
Vulnerability from github – Published: 2022-05-24 17:19 – Updated: 2022-10-07 18:16
VLAI
Details
rom_copy() in hw/core/loader.c in QEMU 4.1.0 does not validate the relationship between two addresses, which allows attackers to trigger an invalid memory copy operation.
Severity
5.6 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-13765"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-04T16:15:00Z",
"severity": "MODERATE"
},
"details": "rom_copy() in hw/core/loader.c in QEMU 4.1.0 does not validate the relationship between two addresses, which allows attackers to trigger an invalid memory copy operation.",
"id": "GHSA-pf9q-2ff3-67r4",
"modified": "2022-10-07T18:16:21Z",
"published": "2022-05-24T17:19:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13765"
},
{
"type": "WEB",
"url": "https://github.com/qemu/qemu/commit/4f1c6cb2f9afafda05eab150fd2bd284edce6676"
},
{
"type": "WEB",
"url": "https://git.qemu.org/?p=qemu.git;a=commit;h=e423455c4f23a1a828901c78fe6d03b7dde79319"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200619-0006"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4467-1"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2020/06/03/6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-PFC2-7MMR-X54W
Vulnerability from github – Published: 2026-04-10 15:31 – Updated: 2026-04-16 21:31
VLAI
Details
NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when slen exceeds the buffer capacity.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2026-6069"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-10T14:16:38Z",
"severity": "HIGH"
},
"details": "NASM\u2019s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.",
"id": "GHSA-pfc2-7mmr-x54w",
"modified": "2026-04-16T21:31:11Z",
"published": "2026-04-10T15:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6069"
},
{
"type": "WEB",
"url": "https://github.com/netwide-assembler/nasm/issues/217"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Operation
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.