CVE-2026-18299: GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability

Q: How do I fix CVE-2026-18299?

gstreamer: upgrade to 1.28.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-18299 being exploited?

CVE-2026-18299 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-18299 affect?

CVE-2026-18299 affects gstreamer. Severity is high (CVSS 7.8). GStreamer rtpsbcdepay Use-After-Free 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

Routine

HIGH 7.8UPGRADE

CVE-2026-18299 is a high-severity flaw (CVSS 7.8) affecting gstreamer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GStreamer rtpsbcdepay Use-After-Free 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. The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of validating the existence o

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-08-20
Last modified	2026-10-26

Publisher (CNA): Zero Day Initiative · Vendor: gstreamer

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-20 17:17 UTCPublished CVE record published
2026-10-26 10:10 UTCUpdated Record last modified

gstreamer gstreamer UPGRADE

Affected: < 1.28.5

Fixed in: 1.28.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gstreamer || rpm -q gstreamer || gstreamer --version

2. UPGRADE to 1.28.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gstreamer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gstreamer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-18299?

gstreamer: upgrade to 1.28.5. Exact commands for each OS are on this page.

Is CVE-2026-18299 being exploited?

CVE-2026-18299 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-18299 affect?

CVE-2026-18299 affects gstreamer. Severity is high (CVSS 7.8). GStreamer rtpsbcdepay Use-After-Free 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

How urgent is CVE-2026-18299?

Priority 30/100. High severity

Related CVEs

CVE-2026-18296 HIGH 7.8 UPGRADE GStreamer MRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2026-18297 HIGH 7.8 UPGRADE GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2026-18295 HIGH 7.8 UPGRADE GStreamer MRF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2026-18298 HIGH 7.8 UPGRADE GStreamer PNG File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

References

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