CVE-2026-12892

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreHIGH confidence

Score 4.4 from GitHub Security Advisory published 2026-06-23. a secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.4Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.

CVSS v3
4.4
EG Score
4.4(high)
EPSS
2.5%
KEV
Not listed

Published

June 23, 2026

Last Modified

July 6, 2026

Advisory Details (3)

Auto-updated Jun 24, 2026
Patch available. Sources: redhat.
generic

GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5108
redhat

2491321 – (CVE-2026-12892) CVE-2026-12892 gstreamer1-plugins-bad: gstreamer1-plugins-bad: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser

https://bugzilla.redhat.com/show_bug.cgi?id=2491321
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12892

Vendor Advisories for CVE-2026-12892(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 02:19 UTCEG score recompute
  2. 2026-07-07 02:19 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 03:47 UTCEG score recompute
  5. 2026-07-06 03:47 UTCGHSA enrichment
  6. 2026-07-05 05:17 UTCEG score recompute
  7. 2026-07-05 05:17 UTCGHSA enrichment
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 06:06 UTCEG score recompute
  11. 2026-07-04 06:06 UTCGHSA enrichment
  12. 2026-07-03 07:35 UTCEG score recompute
  13. 2026-07-03 07:35 UTCGHSA enrichment
  14. 2026-07-02 09:04 UTCEG score recompute
  15. 2026-07-02 09:04 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 10:32 UTCEG score recompute
  19. 2026-07-01 10:32 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 12:02 UTCEG score recompute
  22. 2026-06-30 12:01 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 13:31 UTCEG score recompute
  25. 2026-06-29 13:31 UTCGHSA enrichment
Show 18 more
  1. 2026-06-28 15:01 UTCEG score recompute
  2. 2026-06-28 15:01 UTCGHSA enrichment
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 16:31 UTCEG score recompute
  7. 2026-06-27 16:31 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 18:00 UTCEG score recompute
  10. 2026-06-26 18:00 UTCGHSA enrichment
  11. 2026-06-25 19:30 UTCEG score recompute
  12. 2026-06-25 19:30 UTCGHSA enrichment
  13. 2026-06-25 13:49 UTCEPSS rescore
  14. 2026-06-24 21:00 UTCEG score recompute
  15. 2026-06-24 21:00 UTCGHSA enrichment
  16. 2026-06-24 14:05 UTCEPSS rescore
  17. 2026-06-23 22:30 UTCEG score recompute
  18. 2026-06-23 22:30 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12892?
CVE-2026-12892 is a medium vulnerability published on June 23, 2026. A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary…
When was CVE-2026-12892 disclosed?
CVE-2026-12892 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12892 actively exploited?
CVE-2026-12892 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12892?
CVE-2026-12892 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-12892?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12892, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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