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Vulnerabilities

Vulnerability · CVE-2026-53701

An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad.

Published Jun 11, 2026 · catalog updated Oct 15, 2026 · An out-of-bounds write vulnerability

Check if you run it

No confirmed exploitation is on record for CVE-2026-53701. EPSS is 0.37%. Act only if a listed version of An out-of-bounds write vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An out-of-bounds write vulnerability).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.37%
Remediation
Advisory link
Affected products
Debian:13 gst-plugins-bad1.0 · Debian:14 gst-plugins-bad1.0

An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu_y) in the GstH266PPS structure. While the initial proof-of-concept demonstrated a 4-byte out-of-bounds write, the code permits larger writes across multiple iterations. A crafted H.266/VVC media file can trigger this vulnerability.

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:13 gst-plugins-bad1.00 → 1.26.2-3+deb13u2
  • Debian:14 gst-plugins-bad1.00 → 1.28.3-1

How to fix CVE-2026-53701

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-2026-53701. EPSS is 0.37%. Act only if a listed version of An out-of-bounds write vulnerability is installed.

Which versions are affected?

Compare what you have installed with 0 → 1.26.2-3+deb13u2, 0 → 1.28.3-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.37%. 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. Jun 11, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu

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

    Fix available

    gst-plugins-bad1.0 fixed in 1.26.2-3+deb13u2; gst-plugins-bad1.0 fixed in 1.28.3-1

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

    Fix available

    gst-plugins-bad1.0 fixed in 1.26.2-3+deb13u2

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

    Fix available

    gst-plugins-bad1.0 fixed in 1.28.3-1

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

    Updated

    An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu

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.