{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3081", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-02-23T21:45:55.366Z", "datePublished": "2026-03-13T20:39:20.596Z", "dateUpdated": "2026-03-17T12:43:51.002Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-03-13T20:39:20.596Z"}, "title": "GStreamer H.266 Codec Parser Stack-based Buffer Overflow Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "GStreamer H.266 Codec Parser Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the parsing of decoding units. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28839."}], "affected": [{"vendor": "GStreamer", "product": "GStreamer", "versions": [{"version": "1c6e163aa33962f5ee4a87d29319ccdd5cb67612", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "CWE-121: Stack-based Buffer Overflow", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-162/", "name": "ZDI-26-162", "tags": ["x_research-advisory"]}, {"url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/2ffdfca2df95a7f605c922d3111e5d5be5314dca", "name": "vendor-provided URL", "tags": ["vendor-advisory"]}], "dateAssigned": "2026-02-23T21:45:55.441Z", "datePublic": "2026-03-06T21:20:47.846Z", "source": {"lang": "en", "value": "Anonymous"}, "metrics": [{"format": "CVSS", "cvssV3_0": {"version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-17T03:55:40.718713Z", "id": "CVE-2026-3081", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-17T12:43:51.002Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*", "matchCriteriaId": "1F1B75B8-0527-487E-8F53-A658F7A1E7A5", "versionEndExcluding": "1.28.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GStreamer H.266 Codec Parser Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the parsing of decoding units. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28839."}], "id": "CVE-2026-3081", "lastModified": "2026-03-17T18:58:06.030", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-03-16T14:19:46.047", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/2ffdfca2df95a7f605c922d3111e5d5be5314dca"}, {"source": "[email protected]", "tags": ["Third Party Advisory"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-162/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "GStreamer: GStreamer: Arbitrary code execution via H.266 codec parsing stack-based buffer overflow", "id": "2447494", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447494"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in GStreamer. A remote attacker can exploit this vulnerability by providing specially crafted H.266 codec data during the parsing of decoding units. This issue arises from insufficient validation of the length of user-supplied data before it is copied to a fixed-length stack-based buffer. Successful exploitation can lead to a stack-based buffer overflow, allowing for arbitrary code execution in the context of the current process."], "mitigation": {"lang": "en:us", "value": "To reduce the risk of exploitation, avoid processing untrusted H.266 media content with applications that use the GStreamer framework. Restricting the sources of H.266 content to trusted origins is recommended."}, "name": "CVE-2026-3081", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mingw-gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-13T20:39:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-3081\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-3081\nhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/2ffdfca2df95a7f605c922d3111e5d5be5314dca\nhttps://www.zerodayinitiative.com/advisories/ZDI-26-162/"], "statement": "This is an IMPORTANT vulnerability affecting the GStreamer H.266 codec parser. The flaw allows remote attackers to execute arbitrary code by providing specially crafted H.266 media content. Exploitation requires user interaction with applications that process untrusted H.266 streams using GStreamer.", "threat_severity": "Important"}

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