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Vulnerabilities

Vulnerability · CVE-2026-73433

A flaw was found in GStreamer gst-plugins-good (avidemux).

Published Aug 12, 2026 · catalog updated Oct 15, 2026 · A flaw was found

Check if you run it

No confirmed exploitation is on record for CVE-2026-73433. EPSS is 0.15%. Act only if a listed version of A flaw was found is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A flaw was found).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Advisory link
Affected products
Debian:12 gst-plugins-good1.0 · Debian:13 gst-plugins-good1.0 · Debian:14 gst-plugins-good1.0

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).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 gst-plugins-good1.00 → 1.22.0-5+deb12u4
  • Debian:13 gst-plugins-good1.01.26.10-1, 1.26.2-1, 1.26.2-1+deb13u1
  • Debian:14 gst-plugins-good1.00 → 1.28.6-1

How to fix CVE-2026-73433

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-73433. EPSS is 0.15%. Act only if a listed version of A flaw was found is installed.

Which versions are affected?

Compare what you have installed with 0 → 1.22.0-5+deb12u4, 1.26.10-1, 1.26.2-1, 1.26.2-1+deb13u1, 0 → 1.28.6-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 12, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    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

  2. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    gst-plugins-good1.0 fixed in 1.22.0-5+deb12u4; gst-plugins-good1.0 fixed in 1.28.6-1

  3. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    gst-plugins-good1.0 fixed in 1.22.0-5+deb12u4

  4. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    gst-plugins-good1.0 fixed in 1.28.6-1

  5. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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

Sources

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.