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TI-2026-36523 Aliases CVE-2026-49346

libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow

Priority MEDIUM 64CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed libde265 (strukturag): 1.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
strukturaglibde265before 1.1.01.1.0Patch availableCNA
  • libde265 Vendorstrukturag Affected before 1.1.0 Fixed in 1.1.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*before 1.1.0Vulnerablestrukturag
  • cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:* Versions before 1.1.0 Vulnerable ·strukturag

Remediation

  • Fix · CNA libde265 (strukturag) Fixed in 1.1.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49346

References

Exploit 1

Patch 1

  • TI-2026-25594 NULL Pointer Dereference in libde265 CVSS 4.0HIGH 8.7
  • TI-2023-27026 Libde265 v1.0.14 was discovered to contain a global buffer overflow vulnerability in the… CVSS 3.1HIGH 8.8
  • TI-2023-10674 Libde265 v1.0.10 was discovered to contain a heap-buffer-overflow vulnerability in the… CVSS 3.1HIGH 7.8
  • TI-2022-23669 Libde265 1.0.9 is vulnerable to Buffer Overflow in function void put_qpel_fallback<unsigned short> CVSS 3.1HIGH 7.8
  • TI-2023-23552 Libde265 v1.0.12 was discovered to contain multiple buffer overflows via the… CVSS 3.1HIGH 8.1
  • TI-2022-23679 Libde265 1.0.9 has a heap buffer overflow vulnerability in de265_image::set_SliceAddrRS(int, int, int) CVSS 3.1HIGH 7.8
See all 59 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences