CVE-2026-49337libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`
Updated under an hour ago ()
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It affects strukturag libde265. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Jun 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
strukturag libde265 strukturag:libde265 (from the name) | before 1.0.20 | CNA record |
References
- https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxmx-refsource-confirm
- https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.