CVE-2026-73433

MEDIUMPre-NVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

Score 6.6 from GitHub Security Advisory published 2026-08-12. A secondary CVSS source baseline 6.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

CVSS v3
6.6
EG Score
6.6MEDIUMmedium confidence
EG Risk
30
EG Risk 30/100CISA SSVC

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
Severity66% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 12, 2026

Last Modified

September 23, 2026

Advisory Details (4)

Auto-updated Aug 12, 2026
Patch available. Sources: redhat.
generic

GStreamer Security Advisory

https://gstreamer.freedesktop.org/security/sa-2026-0072.html
generic

avidemux: Make sure enough data is available when parsing FUJIFILM strd and various other fixes (!12231) · Merge requests · GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231
redhat

2514801 – (CVE-2026-73433) CVE-2026-73433 gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux FUJIFILM strd parsing leading to out-of-bounds read/write

https://bugzilla.redhat.com/show_bug.cgi?id=2514801
redhat Patch Available

CVE-2026-73433 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-73433

Vendor Advisories for CVE-2026-73433(12)

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

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibgstreamer-plugins-good1.0-dev (1.8.3-1ubuntu0.5+esm4) @ xenial2026-10-04ubuntu
redhatgstreamer1-plugins-good-0:1.16.1-4.el8_4.22026-09-23redhat
redhatgstreamer1-plugins-good-0:1.16.1-4.el8_6.32026-09-23redhat
redhatgstreamer1-plugins-good-0:1.10.4-4.el7_9.32026-09-22redhat
redhatgstreamer1-plugins-good-0:1.16.1-5.el8_8.32026-09-21redhat
redhatgstreamer1-plugins-good-0:1.22.1-4.el9_4.32026-09-18redhat
redhatgstreamer1-plugins-good-0:1.18.4-8.el9_2.32026-09-17redhat
redhatgstreamer1-plugins-good-0:1.22.12-5.el9_6.32026-09-17redhat
redhatgstreamer1-plugins-good-0:1.24.11-1.el10_0.42026-09-09redhat
redhatgstreamer1-plugins-good-0:1.16.1-7.el8_10.32026-08-19redhat
redhatgstreamer1-plugins-good-0:1.22.12-7.el9_8.42026-08-17redhat
redhatgstreamer1-plugins-good-0:1.26.7-2.el10_2.52026-08-17redhat

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.22.0-5 ... 1.29.2-1 (75 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.29.2-1 (32 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.28.5-1 (26 versions)
  • every version up to 1.28.6-1: fixed in 1.28.6-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 19× in last 7d / 119× 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 224 total refreshes for this CVE.

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

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

Same vendor

4 shown

redhat:RHSA-2026:55434 · redhat:RHSA-2026:56966 · ubuntu:USN-8863-1

Frequently asked(5)

What is CVE-2026-73433?
CVE-2026-73433 is a medium vulnerability published on August 12, 2026. A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gstavidemuxparsestrd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107…
When was CVE-2026-73433 disclosed?
CVE-2026-73433 was first published on August 12, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73433 actively exploited?
CVE-2026-73433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73433?
CVE-2026-73433 has a CVSS base score of 6.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73433?
A fix for CVE-2026-73433 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73433 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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