CVE Tools
Sign in

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 22, 2026 Sources: CVE List NVDCWE-787
NVD MITRE
7.1CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

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
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

libde265strukturag
Library
OSS Libraries / generic-library
strukturagoss-projectOSS Librariesaka libheif, libde265, strukturag/libde265

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

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

Timeline

Published
Jun 19, 2026
Last Updated
Jun 22, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-49295 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows