CVE-2026-18649

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 v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.78% chance of exploitation in the next 30 days, 53th percentile

Published

2026-08-06

Updated

2026-08-31

Proof-of-concept exploits (1)

• 0xSemizzz/CVE-2026-186494★ · 2026-08-06

References

• CVE Record
• NVD entry

Related

• CVE-2026-18648
• CVE-2026-18653
• CVE-2026-18647
• CVE-2026-18666
• CVE-2026-18646
• CVE-2026-1867