CVE-2026-73433

MEDIUMPre-NVD 6.66.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-57444 (ENISA EUVD) · GHSA-cq86-v72j-qxrj (GitHub Security Advisories)Source: ENISA EUVD

6.6EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • 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 30/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity66% × 45%
Impact severity (EG Severity): CVSS 6.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
4th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.6): severity, escalated by confirmed exploitation. This CVE's 6.6 is its impact severity (EG Severity), not escalated.

EG Severity
6.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 12, 2026

Last Modified

September 23, 2026

Advisory Details (4)

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

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
Red Hat

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
Red HatMentions a patch (unverified)

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

Patch Availability(12)

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, 1.22.0-5+deb12u1, 1.22.0-5+deb12u2, 1.22.0-5+deb12u3
  • every version up to 1.22.0-5+deb12u4: fixed in 1.22.0-5+deb12u4
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.29.2-1 (33 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 8× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 277 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 177 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:57 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  3. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  4. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  5. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  6. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  7. 2026-11-07 19:21 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub severity MODERATE · GitHub CVSS 6.6
  8. 2026-11-07 19:21 UTCEchelonGraph re-scored
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  10. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  11. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  12. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  13. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  14. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  16. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  17. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  18. 2026-10-30 06:25 UTCOSV refresh
  19. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  20. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  23. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-10-25 14:05 UTCEchelonGraph re-scored
  25. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
Show 75 more
  1. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-10-22 19:02 UTCEchelonGraph re-scored
  3. 2026-10-22 19:02 UTCVendor advisory
  4. 2026-10-22 19:02 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  5. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  6. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-18 03:15 UTCEchelonGraph re-scored
  11. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-10-12 15:41 UTCEchelonGraph re-scored
  17. 2026-10-11 19:26 UTCEchelonGraph re-scored
  18. 2026-10-11 16:42 UTCEchelonGraph re-scored
  19. 2026-10-11 14:01 UTCEchelonGraph re-scored
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  23. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-10-06 17:24 UTCEchelonGraph re-scored
  25. 2026-10-06 17:24 UTCVendor advisory
  26. 2026-10-06 17:24 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  27. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  28. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-10-04 22:28 UTCVendor advisory
  31. 2026-10-04 22:28 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  32. 2026-10-03 19:57 UTCEchelonGraph re-scored
  33. 2026-10-03 19:57 UTCVendor advisory
  34. 2026-10-03 19:57 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  35. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-10-02 08:20 UTCEchelonGraph re-scored
  37. 2026-10-02 08:20 UTCVendor advisory
  38. 2026-10-02 08:20 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  39. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-30 21:54 UTCEchelonGraph re-scored
  41. 2026-09-30 21:54 UTCVendor advisory
  42. 2026-09-30 21:54 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  43. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  44. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  45. 2026-09-28 12:29 UTCEchelonGraph re-scored
  46. 2026-09-28 12:29 UTCVendor advisory
  47. 2026-09-28 12:29 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  48. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-27 09:53 UTCEchelonGraph re-scored
  50. 2026-09-27 09:53 UTCVendor advisory
  51. 2026-09-27 09:53 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  52. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  53. 2026-09-25 03:40 UTCEchelonGraph re-scored
  54. 2026-09-25 03:40 UTCVendor advisory
  55. 2026-09-25 03:40 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  56. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  57. 2026-09-23 15:21 UTCEchelonGraph re-scored
  58. 2026-09-23 15:21 UTCVendor advisory
  59. 2026-09-23 15:21 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  60. 2026-09-23 15:15 UTCEchelonGraph re-scored
  61. 2026-09-23 15:15 UTCVendor advisory
  62. 2026-09-23 15:15 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  63. 2026-09-23 07:20 UTCEchelonGraph re-scored
  64. 2026-09-23 07:20 UTCVendor advisory
  65. 2026-09-23 07:20 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  66. 2026-09-23 07:11 UTCEchelonGraph re-scored
  67. 2026-09-23 07:11 UTCVendor advisory
  68. 2026-09-23 07:11 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  69. 2026-09-22 16:27 UTCEchelonGraph re-scored
  70. 2026-09-22 16:27 UTCVendor advisory
  71. 2026-09-22 16:26 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  72. 2026-09-22 15:55 UTCEchelonGraph re-scored
  73. 2026-09-22 15:55 UTCVendor advisory
  74. 2026-09-22 15:55 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
  75. 2026-09-22 10:17 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-73433?
CVE-2026-73433 is a medium-severity vulnerability; its CVE record was published on August 12, 2026. 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…
When was CVE-2026-73433 made public?
CVE-2026-73433 was made public on August 5, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on August 12, 2026. EchelonGraph's copy of the record carries a last-modified date of September 23, 2026; the record at its source may have been updated since.
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 (4th 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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