CVE-2026-18649
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
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 during fragmented RTP packet processing. A remote attacker can send a continuous stream of RTP fragments without end-of-fragment markers, causing the buffer to grow unbounded until memory exhaustion.
Risk Assessment
The attack can lead to denial of service through process termination, potentially affecting availability of applications using GStreamer.
Recommendation
Update gst-plugins-good to a patched version. If not possible, restrict access to RTP processing services or apply memory limits.
Other vulnerabilities in GStreamer gst-plugins-good
See all- CVE-2017-5845High
The gst_avi_demux_parse_ncdt function in gst-plugins-good in GStreamer before version 1.10.3 allows remote attackers to cause a denial of service via invalid memory reads, leading to crashes.
- CVE-2017-5841High
The gst_avi_demux_parse_ncdt function in gst-plugins-good in GStreamer before version 1.10.3 allows remote attackers to cause a denial of service (out-of-bounds heap read) via vectors involving ncdt tags.
- CVE-2016-10199High
The qtdemux_tag_add_str_full function in gst/isomp4/qtdemux.c in GStreamer before version 1.10.3 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted tag value.
Original NVD description (English source)
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.