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: 0.4%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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%
EPSS PROB
0.4%
EPSS %ILE
28th
KEV
Not listed

Published

March 16, 2026

Last Modified

July 21, 2026

Advisory Details (10)

Auto-updated Jul 1, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2026:7850
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2026:7673
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:6750
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:6300
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:6259
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:19180
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:19024
genericMentions a patch (unverified)

[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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
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+deb11u4
  • every version up to 1.18.4-2+deb11u5: fixed in 1.18.4-2+deb11u5
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-base1.01.22.0-3 ... 1.22.0-3+deb12u5 (6 versions)
  • every version up to 1.22.0-3+deb12u6: fixed in 1.22.0-3+deb12u6
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-base1.01.26.2-1
  • every version up to 1.26.2-1+deb13u1: fixed in 1.26.2-1+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-base1.01.26.10-1 ... 1.28.0-1 (20 versions)
  • every version up to 1.28.1-1: fixed in 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 7× in last 7d / 24× 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 153 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 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 0.4% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-2921?
CVE-2026-2921 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-2921?
A fix for CVE-2026-2921 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-2921 are linked in the Vendor Advisories panel on this page.

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