{"id":"CVE-2026-18649","title":"A flaw was found in the GStreamer gst-plugins-good package","summary":"A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, u…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"Red Hat","product":"gstreamer1-plugins-good","affected":["gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)","gstreamer1-plugins-good (all versions)"],"patched":["enterprise_linux_appstream_eus_v_10_0","enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_e4s_v_9_2","enterprise_linux_appstream_e4s_v_9_4","enterprise_linux_appstream_eus_v_9_6","enterprise_linux_appstream_v_9"],"published":"2026-08-06","updated":"2026-09-22","sourceUpdated":"2026-09-22T16:17:46.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18649","references":[{"url":"https://0xsemizzz.vercel.app/projects/cve-2026-18649-gstreamer-rtp-dos/","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:53451","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:53452","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:56966","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61588","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61943","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65959","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65999","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:69232","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70264","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-18649","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2510614","label":"secalert@redhat.com"},{"url":"https://github.com/0xSemizzz/CVE-2026-18649","label":"secalert@redhat.com"},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113","label":"secalert@redhat.com"},{"url":"https://0xsemizzz.vercel.app/blog/cve-2026-18649-gstreamer-rtp-dos/","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18649.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18649"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18649"}],"tags":["nvd","exploit-available","cve.org","csaf","vex","red-hat"],"epss":0.00961,"epssPercentile":0.59508,"exploits":{"github":1,"githubRepos":["https://github.com/0xSemizzz/CVE-2026-18649"],"checkedAt":"2026-09-22T17:07:41.818Z"},"exploitAvailable":true,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-08-06T13:42:01.159055Z"},"ingestedAt":"2026-09-09T14:11:29.385Z","slug":"CVE-2026-18649","body":"## Overview\n\nA flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:65959** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65959)\n- **RHSA-2026:53451** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53451)\n- **RHSA-2026:56966** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-08-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:56966)\n- **RHSA-2026:65999** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65999)\n- **RHSA-2026:61588** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61588)\n- **RHSA-2026:61943** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6) · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:61943)\n- **RHSA-2026:53452** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53452)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 7 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18649.json)\n- **RHSA-2026:69232** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69232)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[]}