CVE-2026-12892

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2026-06-23. the CNA's CVSS baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 3 sources updated this week
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.4Exploit: None knownExposed: 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(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity44% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 23, 2026

Last Modified

September 10, 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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.18.4-3 ... 1.29.2-2 (110 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.22.0-4 ... 1.29.2-2 (95 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.2-3, 1.26.2-3+deb13u1, 1.26.2-3+deb13u21.26.2-3+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.10-1 ... 1.28.4-1 (30 versions)1.28.5-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 48× 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.

Showing the most recent 100 of 151 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 17:30 UTCEG score recompute
  4. 2026-09-10 17:30 UTCGHSA enrichment
  5. 2026-09-10 09:34 UTCEPSS rescore
  6. 2026-09-08 22:00 UTCEPSS rescore
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:11 UTCEPSS rescore
  11. 2026-09-01 13:53 UTCEPSS rescore
  12. 2026-09-01 04:39 UTCEPSS rescore
  13. 2026-08-30 20:24 UTCEG score recompute
  14. 2026-08-30 20:24 UTCGHSA enrichment
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-28 21:40 UTCEPSS rescore
  17. 2026-08-27 14:24 UTCEPSS rescore
  18. 2026-08-25 13:48 UTCEPSS rescore
  19. 2026-08-24 13:53 UTCEG score recompute
  20. 2026-08-24 13:53 UTCGHSA enrichment
  21. 2026-08-23 12:15 UTCEG score recompute
  22. 2026-08-23 12:15 UTCGHSA enrichment
  23. 2026-08-23 00:19 UTCEPSS rescore
  24. 2026-08-22 13:44 UTCEG score recompute
  25. 2026-08-22 13:44 UTCGHSA enrichment
Show 75 more
  1. 2026-08-21 23:48 UTCEPSS rescore
  2. 2026-08-21 06:15 UTCEG score recompute
  3. 2026-08-21 06:15 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 07:45 UTCEG score recompute
  6. 2026-08-20 07:45 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 04:47 UTCEG score recompute
  9. 2026-08-19 04:47 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-16 23:24 UTCEG score recompute
  12. 2026-08-16 23:24 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-16 00:54 UTCGHSA enrichment
  16. 2026-08-15 02:24 UTCEG score recompute
  17. 2026-08-15 02:24 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 03:54 UTCEG score recompute
  20. 2026-08-14 03:54 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 05:25 UTCEG score recompute
  23. 2026-08-13 05:24 UTCGHSA enrichment
  24. 2026-08-12 13:50 UTCEPSS rescore
  25. 2026-08-12 06:53 UTCEG score recompute
  26. 2026-08-12 06:53 UTCGHSA enrichment
  27. 2026-08-11 13:42 UTCEPSS rescore
  28. 2026-08-11 08:23 UTCEG score recompute
  29. 2026-08-11 08:23 UTCGHSA enrichment
  30. 2026-08-10 23:59 UTCEPSS rescore
  31. 2026-08-10 09:53 UTCGHSA enrichment
  32. 2026-08-09 11:24 UTCEG score recompute
  33. 2026-08-09 11:24 UTCGHSA enrichment
  34. 2026-08-08 16:37 UTCEPSS rescore
  35. 2026-08-08 12:54 UTCEG score recompute
  36. 2026-08-08 12:54 UTCGHSA enrichment
  37. 2026-08-07 14:24 UTCGHSA enrichment
  38. 2026-08-06 15:55 UTCEG score recompute
  39. 2026-08-06 15:54 UTCGHSA enrichment
  40. 2026-08-06 13:46 UTCEPSS rescore
  41. 2026-08-05 19:17 UTCEPSS rescore
  42. 2026-08-05 17:25 UTCGHSA enrichment
  43. 2026-08-04 18:30 UTCEG score recompute
  44. 2026-08-04 18:30 UTCGHSA enrichment
  45. 2026-08-04 15:09 UTCEPSS rescore
  46. 2026-08-04 10:38 UTCEPSS rescore
  47. 2026-08-03 19:32 UTCEG score recompute
  48. 2026-08-03 19:32 UTCGHSA enrichment
  49. 2026-08-03 10:35 UTCEPSS rescore
  50. 2026-08-02 21:03 UTCEG score recompute
  51. 2026-08-02 21:03 UTCGHSA enrichment
  52. 2026-08-02 02:26 UTCEPSS rescore
  53. 2026-08-01 22:33 UTCEG score recompute
  54. 2026-08-01 22:33 UTCGHSA enrichment
  55. 2026-08-01 04:15 UTCEPSS rescore
  56. 2026-08-01 00:03 UTCGHSA enrichment
  57. 2026-07-31 01:11 UTCEG score recompute
  58. 2026-07-31 01:11 UTCGHSA enrichment
  59. 2026-07-30 16:27 UTCEPSS rescore
  60. 2026-07-30 02:34 UTCEG score recompute
  61. 2026-07-30 02:34 UTCGHSA enrichment
  62. 2026-07-30 01:30 UTCEPSS rescore
  63. 2026-07-29 01:15 UTCEG score recompute
  64. 2026-07-29 01:14 UTCGHSA enrichment
  65. 2026-07-28 15:36 UTCEPSS rescore
  66. 2026-07-27 17:45 UTCEG score recompute
  67. 2026-07-27 17:45 UTCGHSA enrichment
  68. 2026-07-27 14:13 UTCEPSS rescore
  69. 2026-07-26 15:51 UTCEG score recompute
  70. 2026-07-26 15:51 UTCGHSA enrichment
  71. 2026-07-25 14:17 UTCEPSS rescore
  72. 2026-07-24 14:17 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:05 UTCEG score recompute
  75. 2026-07-22 14:08 UTCEPSS rescore

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 September 10, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-12892?
CVE-2026-12892 has a CVSS v4.0 base score of 4.4 (CNA self-assessment; NVD's own analysis pending).
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.

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