CVE-2026-3084

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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."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo por desbordamiento negativo de enteros en el analizador de c\u00f3dec H.266 de GStreamer. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en instalaciones afectadas de GStreamer. Se requiere interacci\u00f3n con esta biblioteca para explotar esta vulnerabilidad, pero los vectores de ataque pueden variar seg\u00fan la implementaci\u00f3n.\n\nLa falla espec\u00edfica existe en el an\u00e1lisis de las particiones de imagen. El problema se debe a la falta de validaci\u00f3n adecuada de los datos proporcionados por el usuario, lo que puede resultar en un desbordamiento negativo de enteros antes de escribir en la memoria. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Fue ZDI-CAN-28910."}], "id": "CVE-2026-3084", "lastModified": "2026-07-15T02:20:57.647", "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"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3084", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-17T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-03-16T14:19:46.477", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Vendor Advisory"], "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/496e4f296e658fba7fd40027d3bbe6095633ec91"}, {"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-169/"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-3084"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447483"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3084.json"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}], "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-191"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "1c6e163aa33962f5ee4a87d29319ccdd5cb67612"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "GStreamer", "source": "cna", "vendor": "GStreamer"}, "product": "gstreamer", "vendor": "gstreamer"}], "analysis": {"en": {"generated_at": "2026-03-17T20:39:54.127271+00:00", "value": {"mitigation_remediation": ["Check for and install the latest GStreamer update that addresses CVE-2026-3084.", "If no update is available, reduce exposure by disabling H.266 support or sandboxing GStreamer when processing untrusted multimedia content.", "Monitor GStreamer vendor advisories for patch releases and apply promptly."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Affected vendor is GStreamer. The affected product is GStreamer itself; specific version information is not supplied in the CNA data. Users of any GStreamer installation that processes H.266 encoded video streams and otherwise depends on GStreamer\u2019s H.266 parsing capabilities are potentially impacted.", "description_and_impact": "The vulnerability described occurs in the parsing of picture partitions within the GStreamer H.266 codec parser and leads to an integer underflow before memory writes. Key detail from vendor description: the flaw arises from insufficient validation of user\u2011supplied data, ultimately permitting an attacker to execute arbitrary code in the context of the running process. This results in full compromise of confidentiality, integrity, and availability of the process that loads the library.", "risk_and_exploitability": "The CVSS score of 7.8 indicates a high severity. The EPSS score is reported as less than 1%, indicating a low probability of observed exploitation in the wild. It is not listed under CISA\u2019s KEV catalog. Based on the description, the likely attack vector requires an attacker to supply crafted H.266 compliant data that is parsed by GStreamer, implying that remote vectors such as network streams, file uploads, or multimedia playback could be used. The vulnerability is exploitable when the library is invoked and the attacker can influence the parsing of picture partitions."}}}}, "created": "2026-03-16T09:23:06.156810+00:00", "updated": "2026-03-23T13:39:37.220177+00:00", "vendors": ["gstreamer", "gstreamer$PRODUCT$gstreamer"]}