{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2923","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","state":"PUBLISHED","assignerShortName":"zdi","dateReserved":"2026-02-20T22:27:14.230Z","datePublished":"2026-03-13T20:39:01.199Z","dateUpdated":"2026-06-30T12:08:21.537Z"},"containers":{"cna":{"providerMetadata":{"orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","shortName":"zdi","dateUpdated":"2026-03-13T20:39:01.199Z"},"title":"GStreamer DVB Subtitles Out-Of-Bounds Write Remote Code Execution Vulnerability","descriptions":[{"lang":"en","value":"GStreamer DVB Subtitles 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 handling of coordinates. 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-28838."}],"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-26-161/","name":"ZDI-26-161","tags":["x_research-advisory"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/3b8253f447bcc9831dbf643d2c69b205fedbe086","name":"vendor-provided URL","tags":["vendor-advisory"]}],"dateAssigned":"2026-02-20T22:27:14.273Z","datePublic":"2026-03-06T21:20:40.929Z","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":"2026-03-16T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-2923"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-17T03:55:38.806Z"}},{"affected":[{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.1","cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.1","cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CRB (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::crb"],"defaultStatus":"affected","product":"Red Hat CodeReady Linux Builder EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 6","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:8"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}],"datePublic":"2026-03-13T20:39:01.199Z","descriptions":[{"lang":"en","value":"A flaw was found in GStreamer. This out-of-bounds write vulnerability in the DVB (Digital Video Broadcasting) Subtitles handling allows remote attackers to execute arbitrary code. The issue stems from improper validation of user-supplied coordinate data, which can lead to writing beyond the boundaries of an allocated memory buffer. Successful exploitation can result in arbitrary code execution within the context of the current process."}],"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-2026-2923"},{"name":"RHBZ#2447503","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447503"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2923.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8854"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:6259"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:19024"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:6750"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8862"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:6300"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:19180"}],"solutions":[{"lang":"en","value":"RHSA-2026:8854: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:6259: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:19024: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:6750: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"},{"lang":"en","value":"RHSA-2026:8862: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:6300: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"},{"lang":"en","value":"RHSA-2026:19180: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}],"timeline":[{"lang":"en","time":"2026-03-13T21:02:25.746Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-03-13T20:39:01.199Z","value":"Made public."}],"title":"GStreamer: GStreamer: Remote Code Execution via out-of-bounds write in DVB Subtitles handling","workarounds":[{"lang":"en","value":"To mitigate this issue, avoid processing untrusted DVB subtitle streams with GStreamer. Limiting exposure to untrusted content can reduce the risk of exploitation."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:08:21.537Z"}}]}}