CVE-2026-49346

Name: CVE-2026-49346
Creator: NVD / NIST
Published: 2026-06-19T21:17:01.847+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.18%

Last modified Jun 26, 2026

CVE-2026-49346 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 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). 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 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_t`, writing ~4 GB into the undersized heap buffer. Version 1.1.0 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-190

Affected Software

Vendor	Product	Versions
Struktur	Libde265	< 1.1.0

References

https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8Patch
https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86Exploit, Vendor Advisory
https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86Exploit, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2026-49346?

How severe is CVE-2026-49346?

CVE-2026-49346 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-2026-49346?

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-2026-49346?

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

Scan your code now

Source: NVD / NIST