CVE-2026-49295
libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS
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.
INFO
Published Date :
June 19, 2026, 9:17 p.m.
Last Modified :
June 26, 2026, 7:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update libde265 to version 1.0.20 or later.
- Apply relevant security patches for libde265.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49295.
| URL | Resource |
|---|---|
| https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b | Patch |
| https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594 | Exploit Mitigation Vendor Advisory |
| https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49295 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49295
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49295 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49295 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.20 Added Reference Type GitHub, Inc.: https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b Types: Patch Added Reference Type GitHub, Inc.: https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594 Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added Reference https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594 Added SSVC {'id': 'CVE-2026-49295', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-22T17:18:41.430511Z'} -
New CVE Received by [email protected]
Jun. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'strukturag', 'product': 'libde265', 'versions': [{'status': 'affected', 'version': '< 1.0.20'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H Added CWE CWE-787 Added Reference https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b Added Reference https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594