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CVE-2026-49295

31
FAUCET Score

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.

First published: Jun 19, 2026Last modified: Jun 19, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.20CPE matchmatch criteria
cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 13th percentile among its peer group of 14,852 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

ubuntupatch availablevia ubuntu_usn
Product: libde265 (bionic)Fixed in: 1.0.2-2ubuntu0.18.04.1~esm6
ubuntupatch availablevia ubuntu_usn
Product: libde265 (focal)Fixed in: 1.0.4-1ubuntu0.4+esm2
ubuntupatch availablevia ubuntu_usn
Product: libde265 (jammy)Fixed in: 1.0.8-1ubuntu0.3+esm2
ubuntupatch availablevia ubuntu_usn
Product: libde265 (noble)Fixed in: 1.0.15-1ubuntu0.1
ubuntupatch availablevia ubuntu_usn
Product: libde265 (resolute)Fixed in: 1.0.16-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: libde265 (xenial)Fixed in: 1.0.2-2ubuntu0.16.04.1~esm6

Vendor Advisories (1)

ubuntuUSN-8573-1

libde265 vulnerabilities

Jul 20, 2026

References

github.com / strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b
Patch
github.com / strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594
ExploitMitigationVendor Advisory