PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-53701 Red Hat CVE debrief

CVE-2026-53701 is a MEDIUM-severity vulnerability with a CVSS score of 6.5. The vulnerability was published on 2026-06-11T19:16:47.913Z and last modified on 2026-06-11T20:56:29.653Z. The vulnerability affects GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad, allowing an out-of-bounds write via a crafted H.266/VVC media file.

Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-11
Advisory published
2026-06-11
Advisory updated
2026-06-11

Who should care

Users of GStreamer's gst-plugins-bad, particularly those processing H.266/VVC media files.

Technical summary

The vulnerability is caused by the loop in gst_h266_parser_parse_picture_partition() (gsth266parser.c) iterating without checking that the slice index stays within bounds. This allows writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu_y) in the GstH266PPS structure.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability.
  • Use secure media file processing practices to minimize exposure.

Evidence notes

The CVE record [cve-org] and NVD detail [nvd] provide official information about the vulnerability. Additional references include Red Hat's security advisory [ref-4] and bug report [ref-5].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53701 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53701

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53701 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53701

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.