CVE-2026-49295
highpriority · track · 0EPSS 0.003 · 27 %ileEURUUSEPSS · scored 2026-10-28
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652bcnnvd
- https://github.com/strukturag/libde265/releasesPatchcnnvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594cnnvd
- https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652benisa_euvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594enisa_euvd
- https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652bPatchnvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594ExploitMitigationVendor Advisorynvd
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