{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18299", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-07-29T17:11:07.286Z", "datePublished": "2026-08-20T16:22:34.064Z", "dateUpdated": "2026-08-21T03:57:13.463Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-08-20T16:22:34.064Z"}, "title": "GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "GStreamer rtpsbcdepay Use-After-Free 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 RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787."}], "affected": [{"vendor": "GStreamer", "product": "GStreamer", "versions": [{"version": "99fde1184fe8b12d0721230941c1bf2080913183", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416: Use After Free", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-467/", "name": "ZDI-26-467", "tags": ["x_research-advisory"]}, {"url": "https://gstreamer.freedesktop.org/security/sa-2026-0051.html", "name": "vendor-provided URL", "tags": ["vendor-advisory"]}], "dateAssigned": "2026-07-29T17:11:07.315Z", "datePublic": "2026-07-29T21:30:00.832Z", "source": {"lang": "en", "value": "DongHyeon Hwang (kind_killerwhale)"}, "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": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-20T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-18299"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-21T03:57:13.463Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "GStreamer", "vendor": "GStreamer", "versions": [{"status": "affected", "version": "99fde1184fe8b12d0721230941c1bf2080913183"}]}], "source": "zdi-disclosures@trendmicro.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GStreamer rtpsbcdepay Use-After-Free 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 RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787."}], "id": "CVE-2026-18299", "lastModified": "2026-08-21T04:17:59.500", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18299", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-20T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-08-20T17:17:26.767", "references": [{"source": "zdi-disclosures@trendmicro.com", "url": "https://gstreamer.freedesktop.org/security/sa-2026-0051.html"}, {"source": "zdi-disclosures@trendmicro.com", "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-467/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}

{"bugzilla": {"description": "gstreamer: GStreamer: Remote Code Execution via Use-After-Free in rtpsbcdepay", "id": "2520605", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520605"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-386", "details": ["GStreamer rtpsbcdepay Use-After-Free 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.\nThe specific flaw exists within the processing of RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787.", "A flaw was found in GStreamer. This use-after-free vulnerability in the rtpsbcdepay element, specifically during the processing of Real-time Transport Protocol (RTP) payload elements, allows a remote attacker to execute arbitrary code. The issue arises from a lack of validation for an object's existence before operations are performed on it. Successful exploitation can lead to arbitrary code execution within 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-2026-18299", "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": "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": "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": "2026-08-20T16:22:34Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-18299\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-18299\nhttps://gstreamer.freedesktop.org/security/sa-2026-0051.html\nhttps://www.zerodayinitiative.com/advisories/ZDI-26-467/"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "99fde1184fe8b12d0721230941c1bf2080913183"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "GStreamer", "source": "cna", "vendor": "GStreamer"}, "product": "gstreamer", "vendor": "gstreamer"}], "created": "2026-08-20T17:45:03.324307+00:00", "updated": "2026-08-22T02:30:17.183003+00:00", "vendors": ["gstreamer", "gstreamer$PRODUCT$gstreamer"]}