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    CVE-2026-40333

    libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.

    Published:Apr 17, 2026
    Last Modified:Apr 22, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.00019
    CVSS Score:6.1

    Affected Products

    Vendor
    Gphoto
    Product
    Libgphoto2

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-40341 (CVSS 3.5) — libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, an out of bound rea…
    CVE-2026-40340 (CVSS 6.1) — libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds r…
    CVE-2026-40339 (CVSS 5.2) — libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds r…
    CVE-2026-40338 (CVSS 5.2) — libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds r…
    CVE-2026-40336 (CVSS 2.4) — libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have a memory leak in `…
    CVE-2026-40335 (CVSS 5.2) — libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds r…
    CVE-2026-40334 (CVSS 3.5) — libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null term…

    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