CVE-2026-49337
mediumpriority · track · 0EPSS 0.002 · 14 %ileEURUEPSS · scored 2026-10-28
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object that has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. 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
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (4)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (7)
External citations — patches, advisories, analysis.
- https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9cnnvd
- https://github.com/strukturag/libde265/releasesPatchcnnvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxmcnnvd
- https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9enisa_euvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxmenisa_euvd
- https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9nvd
- https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxmnvd
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