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    CVE-2026-49346

    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.

    Published:Jun 19, 2026
    Last Modified:Jun 24, 2026
    EPS:Jun 19, 2026
    EPSS Score:0.00184
    CVSS Score:7.1

    Affected Products

    Vendor
    Struktur
    Product
    Libde265

    Exploits

    https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-45383 (CVSS 6.9) — libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.0.19 have a heap buffe…
    CVE-2026-45382 (CVSS 6.9) — libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.19, `decoder_context:…
    CVE-2026-49295 (CVSS 7.1) — libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 b…
    CVE-2026-49337 (CVSS 4.3) — libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequenc…
    CVE-2026-33164 (CVSS 8.7) — libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a malformed H.265…
    CVE-2026-33165 (CVSS 5.5) — libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bi…
    CVE-2025-61147 (CVSS 6.2) — strukturag libde265 commit d9fea9d wa discovered to contain a segmentation fault via the component decoder_con…
    CVE-2024-38949 (CVSS 6.5) — Heap Buffer Overflow vulnerability in Libde265 v1.0.15 allows attackers to crash the application via crafted p…
    CVE-2024-38950 (CVSS 6.5) — Heap Buffer Overflow vulnerability in Libde265 v1.0.15 allows attackers to crash the application via crafted p…
    CVE-2023-49467 (CVSS 8.8) — Libde265 v1.0.14 was discovered to contain a heap-buffer-overflow vulnerability in the derive_combined_bipredi…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High