CVE-2026-2921

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-03-16. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

GStreamer RIFF Palette Integer Overflow 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 handling of palette data in AVI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28854.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

March 16, 2026

Last Modified

July 21, 2026

Advisory Details (10)

Auto-updated Jul 1, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2026:7850
redhat Patch Available

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2026:7673
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:6750
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:6300
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:6259
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:19180
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:19024
generic Patch Available

[SECURITY] [DLA 4514-1] gst-plugins-base1.0 security update

https://lists.debian.org/debian-lts-announce/2026/03/msg00018.html
generic

ZDI-26-168 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-168/
generic

security-advisories: Add SA-2026-0004, ZDI-CAN-28854, CVE-2026-2921 (e3a99c35) · Commits · GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/e3a99c35266fc92dd6a18ac5fde028d0cda559e6

Vendor Advisories for CVE-2026-2921(17)

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgstreamer-plugins-base1.0-dev (1.24.2-1ubuntu0.4) @ noble2026-06-30ubuntu
ubuntulibgstreamer-plugins-base1.0-dev (1.14.5-0ubuntu1~18.04.3+esm3) @ bionic2026-06-30ubuntu
ubuntulibgstreamer-plugins-base1.0-dev (1.8.3-1ubuntu0.3+esm4) @ xenial2026-06-30ubuntu
redhatgstreamer1-plugins-ugly-free-0:1.22.12-6.el9_82026-05-19redhat
redhatgstreamer1-plugins-ugly-free-0:1.26.7-2.el10_22026-05-19redhat
redhatgstreamer1-plugins-good-0:1.16.1-5.el8_82026-04-21redhat
redhatgstreamer1-plugins-good-0:1.16.1-4.el8_42026-04-21redhat
redhatgstreamer1-plugins-good-0:1.16.1-4.el8_62026-04-21redhat
redhatgstreamer1-plugins-good-0:1.16.1-3.el8_22026-04-21redhat
redhatgstreamer1-plugins-ugly-free-0:1.22.12-4.el9_62026-04-20redhat
redhatgstreamer1-plugins-ugly-free-0:1.24.11-1.el10_0.12026-04-20redhat
redhatgstreamer1-plugins-good-0:1.18.4-8.el9_22026-04-20redhat
redhatgstreamer1-plugins-good-0:1.22.1-4.el9_42026-04-20redhat
redhatgstreamer1-plugins-good-0:1.18.4-7.el9_02026-04-20redhat
redhatgstreamer-plugins-good-0:0.10.31-14.el7_92026-04-13redhat
redhatgstreamer1-plugins-good-0:1.10.4-4.el7_92026-04-13redhat
redhatgstreamer1-plugins-good-0:1.16.1-6.el8_102026-04-07redhat
redhatgstreamer1-plugins-ugly-free-0:1.22.12-4.el9_72026-03-31redhat
redhatgstreamer1-plugins-ugly-free-0:1.24.11-2.el10_12026-03-31redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-base1.01.18.4-2, 1.18.4-2+deb11u1, 1.18.4-2+deb11u2, 1.18.4-2+deb11u3, 1.18.4-2+deb11u41.18.4-2+deb11u5—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-base1.01.22.0-3 ... 1.22.0-3+deb12u5 (6 versions)1.22.0-3+deb12u6—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-base1.01.26.2-11.26.2-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-base1.01.26.10-1 ... 1.28.0-1 (20 versions)1.28.1-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 30× 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 137 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-2921?
CVE-2026-2921 is a high vulnerability published on March 16, 2026. GStreamer RIFF Palette Integer Overflow 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…
When was CVE-2026-2921 disclosed?
CVE-2026-2921 was first published in the National Vulnerability Database on March 16, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2921 actively exploited?
CVE-2026-2921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.9% of all scored CVEs.
What is the CVSS score of CVE-2026-2921?
CVE-2026-2921 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-2921?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2921, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-2921

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