{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-6663", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2025-06-25T14:32:51.109Z", "datePublished": "2025-07-07T14:58:01.368Z", "dateUpdated": "2025-07-07T15:11:45.408Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2025-07-07T14:58:01.368Z"}, "title": "GStreamer H266 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "GStreamer H266 Codec Parsing 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 H266 sei messages. 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-27381."}], "affected": [{"vendor": "GStreamer", "product": "GStreamer", "versions": [{"version": "97fec43422c4b62d569957d721c899bdaaa9da61", "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-25-467/", "name": "ZDI-25-467", "tags": ["x_research-advisory"]}, {"url": "https://gitlab.freedesktop.org/tpm/gstreamer/-/commit/eedd01ac3dfeb60e36a44bb61a6d0418454e8416", "name": "vendor-provided URL", "tags": ["vendor-advisory"]}], "dateAssigned": "2025-06-25T14:32:51.176Z", "datePublic": "2025-07-03T19:51:45.954Z", "source": {"lang": "en", "value": "MICHAEL RANDRIANANTENAINA [https://elkamika.blogspot.com/]"}, "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": "2025-07-07T15:11:33.219470Z", "id": "CVE-2025-6663", "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": "2025-07-07T15:11:45.408Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "GStreamer H266 Codec Parsing 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 H266 sei messages. 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-27381."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo por desbordamiento de b\u00fafer basado en pila en el an\u00e1lisis de GStreamer H266 Codec. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas de GStreamer. Se requiere la interacci\u00f3n con esta librer\u00eda para explotar esta vulnerabilidad, pero los vectores de ataque pueden variar seg\u00fan la implementaci\u00f3n. La falla espec\u00edfica se encuentra en el an\u00e1lisis de los mensajes sei H266. El problema se debe a la falta de una validaci\u00f3n adecuada de la longitud de los datos proporcionados por el usuario antes de copiarlos a un b\u00fafer basado en pila de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Era ZDI-CAN-27381."}], "id": "CVE-2025-6663", "lastModified": "2025-07-08T16:18:34.923", "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": "2025-07-07T15:15:28.480", "references": [{"source": "[email protected]", "url": "https://gitlab.freedesktop.org/tpm/gstreamer/-/commit/eedd01ac3dfeb60e36a44bb61a6d0418454e8416"}, {"source": "[email protected]", "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-467/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "gstreamer: GStreamer Code Execution Vulnerability", "id": "2376845", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376845"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-121", "details": ["A stack based buffer overflow was found in the GStreamer media handling library. This flaw allows an attacker who is able to feed in a maliciously constructed H266 file to execute arbitrary code in the context of the process running GStreamer."], "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-2025-6663", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "mingw-gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-07T14:58:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-6663\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-6663\nhttps://gitlab.freedesktop.org/tpm/gstreamer/-/commit/eedd01ac3dfeb60e36a44bb61a6d0418454e8416\nhttps://gstreamer.freedesktop.org/releases/1.26/\nhttps://www.zerodayinitiative.com/advisories/ZDI-25-467/"], "statement": "No Red Hat products or offerings are affected by this vulnerability.\nThis vulnerability has been rated as Important rather than Moderate due to its capability to enable remote code execution (RCE) through a stack-based buffer overflow. Unlike typical parsing defects that primarily lead to denial of service, this specific flaw allows an attacker to gain control of the instruction pointer by corrupting stack memory, thereby creating an opportunity for arbitrary code execution. Given GStreamer's widespread use across desktop environments and various media applications, including web browsers, chat clients, and media players, an attacker could exploit this by enticing a user to open or stream a specially crafted malicious video file. The fact that successful exploitation does not require elevated privileges or complex user interaction significantly escalates both its exploitability and potential impact, marking this as a high-severity security concern for end-user systems.", "threat_severity": "Important"}