CVE-2026-18649

highpriority · track · 10EPSS 0.010 · 61 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.96% (61st) EPSS

CVSS 7.5 · high

Is it mine?

12 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

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, 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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 3.9 · impact 3.6

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770US

exploits (1)

Public proof-of-concept and weaponised exploit code.

0xSemizzz/CVE-2026-18649Proof of concept for CVE-2026-18649, a remote denial of service vulnerability in GStreamer's H.264 RTP depayloader (rtph264depay).PoC · poc_in_github

affected products (12)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source GStreamer≤ gst-plugins-bad <1.28.6cert_bundDE
Open Source GStreamer≤ gst-plugins-good <1.28.6cert_bundDE
Open Source GStreamer≤ gst-plugins-ugly <1.28.5cert_bundDE
Open Source GStreamer≤ st-libav <1.28.6cert_bundDE
Red Hat Red Hat Enterprise Linux 10< 0:1.26.7-2.el10_2.3enisa_euvdEU
Red Hat Red Hat Enterprise Linux 9< 0:1.22.12-7.el9_8.2enisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2662GStreamer: Mehrere SchwachstellenDeutsch2026-08-05csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GStreamer ausnutzen, um Daten zu beschädigen, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen oder möglicherweise beliebigen Code auszuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2026-08-06modified 2026-09-23

references (25)

External citations — patches, advisories, analysis.

scry

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