CVE-2026-3336 (GCVE-0-2026-3336)
Vulnerability from cvelistv5 – Published: 2026-03-02 21:15 – Updated: 2026-08-21 12:13
VLAI
EPSS
VEX
Title
PKCS7_verify Certificate Chain Validation Bypass in AWS-LC
Summary
Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.
Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-03 20:05 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/aws/aws-lc/releases/tag/v1.69.0 | patch |
| https://github.com/aws/aws-lc/security/advisories… | third-party-advisory |
| https://access.redhat.com/security/cve/CVE-2026-3336 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2444026 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:5459 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| AWS | AWS-LC |
Affected:
1.41.0 , < 1.69.0
(custom)
|
guessed | |
| Red Hat | Red Hat Trusted Artifact Signer 1.3 |
Unaffected:
1773307309 , < *
(rpm)
cpe:/a:redhat:trusted_artifact_signer:1.3::el9 |
||
| Red Hat | Confidential Compute Attestation |
cpe:/a:redhat:confidential_compute_attestation:1
|
||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
||
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
||
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
||
| Red Hat | Red Hat OpenShift Update Service |
cpe:/a:redhat:openshift_update_service:5
|
||
| Red Hat | Red Hat Trusted Profile Analyzer |
cpe:/a:redhat:trusted_profile_analyzer:2
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-3336",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-03T20:05:19.376361Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-03T20:05:26.157Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuffer-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuftool-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-monitor-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-operator-bundle",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-podvm-builder-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "affected",
"packageName": "openshift-sandboxed-containers/osc-podvm-payload-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-rhel9-operator",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "virt-firmware-rs",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
"packageName": "kata-containers",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift_update_service:5"
],
"defaultStatus": "unaffected",
"packageName": "openshift-update-service/openshift-update-service-rhel8",
"product": "Red Hat OpenShift Update Service",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:trusted_profile_analyzer:2"
],
"defaultStatus": "affected",
"packageName": "rhtpa/rhtpa-trustification-service-rhel9",
"product": "Red Hat Trusted Profile Analyzer",
"vendor": "Red Hat"
}
],
"datePublic": "2026-03-02T21:15:16.709Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in aws-lc, a cryptographic library. An unauthenticated attacker can exploit improper certificate validation within the `PKCS7_verify()` function. This allows them to bypass the verification process for certificate chains when handling PKCS7 objects that contain multiple digital signers, except for the last one. The primary consequence is a compromise of integrity, as the system may incorrectly trust unverified certificates."
}
],
"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": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-295",
"description": "Improper Certificate Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-21T12:13:00.341Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-3336"
},
{
"name": "RHBZ#2444026",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444026"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3336.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:5459"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:5459: Red Hat Trusted Artifact Signer 1.3"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-02T22:01:15.917Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-03-02T21:15:16.709Z",
"value": "Made public."
}
],
"title": "aws-lc: aws-lc: Certificate validation bypass via improper handling of PKCS7 objects",
"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": [
{
"defaultStatus": "unaffected",
"product": "AWS-LC",
"vendor": "AWS",
"versions": [
{
"lessThan": "1.69.0",
"status": "affected",
"version": "1.41.0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.\u003cbr\u003e\u003cbr\u003eCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.\u003c/p\u003e"
}
],
"value": "Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0."
}
],
"impacts": [
{
"capecId": "CAPEC-459",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-459 (Creating a Rogue Certification Authority Certificate)"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "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:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-295",
"description": "CWE-295 (Improper Certificate Validation)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-02T22:16:34.237Z",
"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"shortName": "AMZN"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://aws.amazon.com/security/security-bulletins/2026-005-AWS/"
},
{
"tags": [
"patch"
],
"url": "https://github.com/aws/aws-lc/releases/tag/v1.69.0"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "PKCS7_verify Certificate Chain Validation Bypass in AWS-LC",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"assignerShortName": "AMZN",
"cveId": "CVE-2026-3336",
"datePublished": "2026-03-02T21:15:16.709Z",
"dateReserved": "2026-02-27T15:16:27.359Z",
"dateUpdated": "2026-08-21T12:13:00.341Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-3336",
"date": "2026-11-15",
"epss": "0.00738",
"percentile": "0.55103"
},
"microsoft_vex": {
"current_release_date": "2026-03-06T01:38:19.000Z",
"cve": "CVE-2026-3336",
"id": "msrc_CVE-2026-3336",
"initial_release_date": "2026-03-02T00:00:00.000Z",
"product_status:known_affected": "1",
"product_status:known_not_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "PKCS7_verify Certificate Chain Validation Bypass in AWS-LC",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-3336.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "AWS-LC",
"vendor": "AWS",
"versions": [
{
"lessThan": "1.69.0",
"status": "affected",
"version": "1.41.0",
"versionType": "custom"
}
]
}
],
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
},
{
"affectedData": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuffer-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuftool-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-monitor-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-operator-bundle",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-podvm-builder-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "affected",
"packageName": "openshift-sandboxed-containers/osc-podvm-payload-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-rhel9-operator",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "virt-firmware-rs",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
"packageName": "kata-containers",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift_update_service:5"
],
"defaultStatus": "unaffected",
"packageName": "openshift-update-service/openshift-update-service-rhel8",
"product": "Red Hat OpenShift Update Service",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:trusted_profile_analyzer:2"
],
"defaultStatus": "affected",
"packageName": "rhtpa/rhtpa-trustification-service-rhel9",
"product": "Red Hat Trusted Profile Analyzer",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:amazon:aws-lc-sys:*:*:*:*:*:rust:*:*",
"matchCriteriaId": "1657BD7A-BA4B-430A-809F-DE772460B0EA",
"versionEndExcluding": "0.38.0",
"versionStartIncluding": "0.24.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:amazon:aws_libcrypto:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4B6E82AB-2DB6-4350-B218-772CE7852DCC",
"versionEndExcluding": "1.69.0",
"versionStartIncluding": "1.41.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0."
},
{
"lang": "es",
"value": "Validaci\u00f3n incorrecta de certificados en PKCS7_verify() en AWS-LC permite a un usuario no autenticado eludir la verificaci\u00f3n de la cadena de certificados al procesar objetos PKCS7 con m\u00faltiples firmantes, excepto el firmante final.\n\nLos clientes de los servicios de AWS no necesitan tomar ninguna medida. Las aplicaciones que utilizan AWS-LC deber\u00edan actualizarse a la versi\u00f3n 1.69.0 de AWS-LC."
}
],
"id": "CVE-2026-3336",
"lastModified": "2026-07-15T02:20:59.523",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"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": 8.7,
"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:N/VI:H/VA:N/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": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3336",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-03T20:05:19.376361Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-02T22:16:31.277",
"references": [
{
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"tags": [
"Vendor Advisory"
],
"url": "https://aws.amazon.com/security/security-bulletins/2026-005-AWS/"
},
{
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"tags": [
"Release Notes"
],
"url": "https://github.com/aws/aws-lc/releases/tag/v1.69.0"
},
{
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:5459"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/security/cve/CVE-2026-3336"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444026"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3336.json"
}
],
"sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-295"
}
],
"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-295"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-11-04T22:23:36+00:00",
"cve": "CVE-2026-3336",
"id": "CVE-2026-3336",
"initial_release_date": "2026-03-02T21:15:16.709000+00:00",
"product_status:fixed": "2",
"product_status:known_affected": "7",
"product_status:known_not_affected": "6",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "aws-lc: aws-lc: Certificate validation bypass via improper handling of PKCS7 objects",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3336.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuffer-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"packageName": "rhtas/tuftool-rhel9",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1773307309",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-monitor-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-operator-bundle",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-podvm-builder-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "affected",
"packageName": "openshift-sandboxed-containers/osc-podvm-payload-rhel9",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:confidential_compute_attestation:1"
],
"defaultStatus": "unaffected",
"packageName": "openshift-sandboxed-containers/osc-rhel9-operator",
"product": "Confidential Compute Attestation",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"packageName": "trustee",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "virt-firmware-rs",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "affected",
"packageName": "clevis-pin-trustee",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
"packageName": "kata-containers",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift_update_service:5"
],
"defaultStatus": "unaffected",
"packageName": "openshift-update-service/openshift-update-service-rhel8",
"product": "Red Hat OpenShift Update Service",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:trusted_profile_analyzer:2"
],
"defaultStatus": "affected",
"packageName": "rhtpa/rhtpa-trustification-service-rhel9",
"product": "Red Hat Trusted Profile Analyzer",
"vendor": "Red Hat"
}
],
"datePublic": "2026-03-02T21:15:16.709Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in aws-lc, a cryptographic library. An unauthenticated attacker can exploit improper certificate validation within the `PKCS7_verify()` function. This allows them to bypass the verification process for certificate chains when handling PKCS7 objects that contain multiple digital signers, except for the last one. The primary consequence is a compromise of integrity, as the system may incorrectly trust unverified certificates."
}
],
"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": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-295",
"description": "Improper Certificate Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-21T12:13:00.341Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-3336"
},
{
"name": "RHBZ#2444026",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444026"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3336.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:5459"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:5459: Red Hat Trusted Artifact Signer 1.3"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-02T22:01:15.917Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-03-02T21:15:16.709Z",
"value": "Made public."
}
],
"title": "aws-lc: aws-lc: Certificate validation bypass via improper handling of PKCS7 objects",
"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-2026-3336",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-03T20:05:19.376361Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-03T20:05:23.006Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "AWS-LC",
"vendor": "AWS",
"versions": [
{
"lessThan": "1.69.0",
"status": "affected",
"version": "1.41.0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.\u003cbr\u003e\u003cbr\u003eCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.\u003c/p\u003e"
}
],
"value": "Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0."
}
],
"impacts": [
{
"capecId": "CAPEC-459",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-459 (Creating a Rogue Certification Authority Certificate)"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "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:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-295",
"description": "CWE-295 (Improper Certificate Validation)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-02T22:16:34.237Z",
"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"shortName": "AMZN"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://aws.amazon.com/security/security-bulletins/2026-005-AWS/"
},
{
"tags": [
"patch"
],
"url": "https://github.com/aws/aws-lc/releases/tag/v1.69.0"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "PKCS7_verify Certificate Chain Validation Bypass in AWS-LC",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"assignerShortName": "AMZN",
"cveId": "CVE-2026-3336",
"datePublished": "2026-03-02T21:15:16.709Z",
"dateReserved": "2026-02-27T15:16:27.359Z",
"dateUpdated": "2026-08-21T12:13:00.341Z",
"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
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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.