{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3086","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","state":"PUBLISHED","assignerShortName":"zdi","dateReserved":"2026-02-23T21:47:17.523Z","datePublished":"2026-03-13T20:40:12.973Z","dateUpdated":"2026-06-30T12:08:18.214Z"},"containers":{"cna":{"providerMetadata":{"orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","shortName":"zdi","dateUpdated":"2026-03-13T20:40:12.973Z"},"title":"GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability","descriptions":[{"lang":"en","value":"GStreamer H.266 Codec Parser Out-Of-Bounds Write 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 processing of APS units. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28911."}],"affected":[{"vendor":"GStreamer","product":"GStreamer","versions":[{"version":"1c6e163aa33962f5ee4a87d29319ccdd5cb67612","status":"affected"}],"defaultStatus":"unknown"}],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-26-170/","name":"ZDI-26-170","tags":["x_research-advisory"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/025d59cf3459c2903f0384b6b94bc3235e177b53","name":"vendor-provided URL","tags":["vendor-advisory"]}],"dateAssigned":"2026-02-23T21:47:17.610Z","datePublic":"2026-03-06T21:21:29.622Z","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":"2026-03-17T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-3086"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-18T03:55:36.715Z"}},{"affected":[{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}],"datePublic":"2026-03-13T20:40:12.973Z","descriptions":[{"lang":"en","value":"A flaw was found in GStreamer. A remote attacker could exploit this out-of-bounds write vulnerability by providing specially crafted H.266 video data. This issue, specifically within the processing of Adaptation Parameter Set (APS) units, stems from insufficient validation of user-supplied data, leading to a write beyond the allocated buffer. Successful exploitation allows the attacker to execute arbitrary code on the system where GStreamer is running."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"Out-of-bounds Write","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-3086"},{"name":"RHBZ#2447493","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447493"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3086.json"}],"timeline":[{"lang":"en","time":"2026-03-13T21:01:55.526Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-03-13T20:40:12.973Z","value":"Made public."}],"title":"GStreamer: GStreamer: Remote Code Execution via Out-Of-Bounds Write in H.266 Codec Parser","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"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:08:18.214Z"}}]}}