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).
CVE-2026-73433
“—” beside the score: it is equal to the CVSS score beside it.
Score 6.6 from GitHub Security Advisory published 2026-08-12. A secondary CVSS source baseline 6.6; sources differ by 0.0.
Also known asEUVD-2026-57444 (ENISA EUVD) · GHSA-cq86-v72j-qxrj (GitHub Security Advisories)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.6
- EG Score
- 6.6MEDIUMmedium confidence
- EG Risk
- 30EG 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 2026-10-24). 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, 2026avidemux: 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/122312514801 – (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=2514801CVE-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-2026-73433Vendor 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.
- RHSA-2026:70803Red Hat Product SecurityMedium
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:70584Red Hat Product SecurityMedium
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:70264Red Hat Product SecurityMedium
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:69232Red Hat Product SecurityMedium
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:68642Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:68644Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:68645Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-good security update
- RHSA-2026:65959Red Hat Product SecurityMedium
Red Hat Security Advisory: gstreamer1-plugins-good security update
- +4 more
Patch Availability(12)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libgstreamer-plugins-good1.0-dev (1.24.2-1ubuntu1.8) @ noble | 2026-10-22 | ubuntu |
| redhat | gstreamer1-plugins-good-0:1.16.1-4.el8_4.2 | 2026-09-23 | redhat |
| redhat | gstreamer1-plugins-good-0:1.16.1-4.el8_6.3 | 2026-09-23 | redhat |
| redhat | gstreamer1-plugins-good-0:1.10.4-4.el7_9.3 | 2026-09-22 | redhat |
| redhat | gstreamer1-plugins-good-0:1.16.1-5.el8_8.3 | 2026-09-21 | redhat |
| redhat | gstreamer1-plugins-good-0:1.22.1-4.el9_4.3 | 2026-09-18 | redhat |
| redhat | gstreamer1-plugins-good-0:1.18.4-8.el9_2.3 | 2026-09-17 | redhat |
| redhat | gstreamer1-plugins-good-0:1.22.12-5.el9_6.3 | 2026-09-17 | redhat |
| redhat | gstreamer1-plugins-good-0:1.24.11-1.el10_0.4 | 2026-09-09 | redhat |
| redhat | gstreamer1-plugins-good-0:1.16.1-7.el8_10.3 | 2026-08-19 | redhat |
| redhat | gstreamer1-plugins-good-0:1.22.12-7.el9_8.4 | 2026-08-17 | redhat |
| redhat | gstreamer1-plugins-good-0:1.26.7-2.el10_2.5 | 2026-08-17 | redhat |
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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-good1.0 | 1.22.0-5 ... 1.29.2-1 (75 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-good1.0 | 1.26.10-1 ... 1.29.2-1 (32 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-good1.0 | 1.26.10-1 ... 1.28.5-1 (26 versions) |
| — |
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 / 46× 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 it from the CNA feed. 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). Most recent first.
Showing the most recent 100 of 263 refreshes 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 163 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 4th percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 4th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · 4th percentile
- 2026-10-30 06:25 UTCOSV refresh
- 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-25 14:05 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-22 19:02 UTCEG score recompute
- 2026-10-22 19:02 UTCVendor advisory
- 2026-10-22 19:02 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-18 03:15 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
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- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-12 15:41 UTCEG score recompute
- 2026-10-11 19:26 UTCEG score recompute
- 2026-10-11 16:42 UTCEG score recompute
- 2026-10-11 14:01 UTCEG score recompute
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-06 17:24 UTCEG score recompute
- 2026-10-06 17:24 UTCVendor advisory
- 2026-10-06 17:24 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-04 22:28 UTCVendor advisory
- 2026-10-04 22:28 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-10-03 19:57 UTCEG score recompute
- 2026-10-03 19:57 UTCVendor advisory
- 2026-10-03 19:57 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-02 08:20 UTCEG score recompute
- 2026-10-02 08:20 UTCVendor advisory
- 2026-10-02 08:20 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-30 21:54 UTCEG score recompute
- 2026-09-30 21:54 UTCVendor advisory
- 2026-09-30 21:54 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-28 12:29 UTCEG score recompute
- 2026-09-28 12:29 UTCVendor advisory
- 2026-09-28 12:29 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-27 09:53 UTCEG score recompute
- 2026-09-27 09:53 UTCVendor advisory
- 2026-09-27 09:53 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-25 03:40 UTCEG score recompute
- 2026-09-25 03:40 UTCVendor advisory
- 2026-09-25 03:40 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 4th percentile
- 2026-09-23 15:21 UTCEG score recompute
- 2026-09-23 15:21 UTCVendor advisory
- 2026-09-23 15:21 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-23 15:15 UTCEG score recompute
- 2026-09-23 15:15 UTCVendor advisory
- 2026-09-23 15:15 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-23 07:20 UTCEG score recompute
- 2026-09-23 07:20 UTCVendor advisory
- 2026-09-23 07:20 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-23 07:11 UTCEG score recompute
- 2026-09-23 07:11 UTCVendor advisory
- 2026-09-23 07:11 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-22 16:27 UTCEG score recompute
- 2026-09-22 16:27 UTCVendor advisory
- 2026-09-22 16:26 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-22 15:55 UTCEG score recompute
- 2026-09-22 15:55 UTCVendor advisory
- 2026-09-22 15:55 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-22 10:17 UTCEG score recompute
- 2026-09-22 10:17 UTCVendor advisory
- 2026-09-22 10:17 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-21 08:27 UTCEG score recompute
- 2026-09-21 08:27 UTCVendor advisory
- 2026-09-21 08:26 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-21 07:35 UTCEG score recompute
- 2026-09-21 07:35 UTCVendor advisory
- 2026-09-21 07:35 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-09-20 16:32 UTCEG score recompute
- 2026-09-20 16:32 UTCVendor advisory
- 2026-09-20 16:32 UTCGHSA enrichmentGHSA-cq86-v72j-qxrj · GitHub CVSS 6.6
- 2026-09-19 13:10 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:12:gst-plugins-good1.0
- CVE-2024-47613EG 9.8CRITICAL
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- CVE-2024-47539EG 9.8CRITICAL
- CVE-2024-47537EG 9.8CRITICAL
- CVE-2016-9636EG 9.8EPSS p95CRITICAL
- CVE-2016-9635EG 9.8EPSS p95CRITICAL
- CVE-2016-9634EG 9.8EPSS p95CRITICAL
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- CVE-2024-47834EG 9.1CRITICAL
Same vendor
4 shownredhat:RHSA-2026:55434 · redhat:RHSA-2026:56966 · ubuntu:USN-8863-1
Frequently asked(5)
What is CVE-2026-73433?
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How do I remediate CVE-2026-73433?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73433
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