CVE-2026-49295

Name: CVE-2026-49295
Creator: NVD / NIST
Published: 2026-06-19T21:17:01.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.18%

Last modified Jun 26, 2026

CVE-2026-49295 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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`). EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.18%

8.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Struktur	Libde265	< 1.0.20

References

https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652bPatch
https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594Exploit, Mitigation, Vendor Advisory
https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594Exploit, Mitigation, Vendor Advisory

Timeline

Published: Jun 19, 2026
Last Modified: Jun 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-49295?

How severe is CVE-2026-49295?

CVE-2026-49295 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-49295?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-49295?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST