{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3084", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-02-23T21:46:43.420Z", "datePublished": "2026-03-13T20:42:03.443Z", "dateUpdated": "2026-03-16T15:41:06.083Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-03-13T20:42:03.443Z"}, "title": "GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "GStreamer H.266 Codec Parser Integer Underflow 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 picture partitions. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28910."}], "affected": [{"vendor": "GStreamer", "product": "GStreamer", "versions": [{"version": "1c6e163aa33962f5ee4a87d29319ccdd5cb67612", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-191", "description": "CWE-191: Integer Underflow (Wrap or Wraparound)", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-169/", "name": "ZDI-26-169", "tags": ["x_research-advisory"]}, {"url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/496e4f296e658fba7fd40027d3bbe6095633ec91", "name": "vendor-provided URL", "tags": ["vendor-advisory"]}], "dateAssigned": "2026-02-23T21:46:43.468Z", "datePublic": "2026-03-06T21:21:24.266Z", "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": {"id": "CVE-2026-3084", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-16T15:26:19.266033Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-16T15:41:06.083Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "GStreamer H.266 Codec Parser Integer Underflow 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 picture partitions. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28910."}], "id": "CVE-2026-3084", "lastModified": "2026-03-16T14:53:07.390", "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": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}, "published": "2026-03-16T14:19:46.477", "references": [{"source": "zdi-disclosures@trendmicro.com", "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/496e4f296e658fba7fd40027d3bbe6095633ec91"}, {"source": "zdi-disclosures@trendmicro.com", "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-169/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}], "source": "zdi-disclosures@trendmicro.com", "type": "Primary"}]}

{"bugzilla": {"description": "GStreamer: GStreamer: Remote Code Execution via integer underflow in H.266 Codec Parser", "id": "2447483", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447483"}, "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-191", "details": ["A flaw was found in GStreamer. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. The issue stems from an integer underflow during the parsing of H.266 video codec picture partitions, caused by insufficient validation of user-supplied data. Successful exploitation can lead to remote code execution in the context of the current process."], "mitigation": {"lang": "en:us", "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."}, "name": "CVE-2026-3084", "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": "Out of support scope", "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": "2026-03-13T20:42:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-3084\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-3084\nhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/496e4f296e658fba7fd40027d3bbe6095633ec91\nhttps://www.zerodayinitiative.com/advisories/ZDI-26-169/"], "statement": "IMPORTANT: This vulnerability in GStreamer's H.266 codec parser could lead to remote code execution due to an integer underflow when processing specially crafted H.266 media files. Red Hat Enterprise Linux systems are affected if they process untrusted H.266 content, as exploitation requires user interaction with such a file.", "threat_severity": "Important"}

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