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CVE-2026-49295

libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS

Published: Jun 19, 2026Updated: Jun 26, 2026 Sources: CVE List NVDCWE-787
7.1HIGH
NVD MITRE
EPSS Score
0.3%
Top 73.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:LA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:HAvailability
High
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Weaknesses

CWE-787

Affected Products

strukturag
oss-projectaka strukturag/libde265, libheif, libde265
libde265Library
OSS Libraries / generic-library
struktur
oss-projectaka libheif, libde265 libheif, libde265
libde265LibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594
github.com
https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b
github.com

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