CVE-2026-120454

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    CVE-2026-120454

    Published: 2 Nov 2026Last Modified: 7 Nov 2026

    Summary: The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression

    Details: The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfs_decompress_lzvn_attr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressed_size in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120454.json, https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0, https://nvd.nist.gov/vuln/detail/CVE-2026-120454, https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression, https://github.com/sleuthkit/sleuthkit/issues/3583, https://github.com/sleuthkit/sleuthkit, https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169, https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read, https://hackmd.io/@haindpwn/cve-2026-120453-120454-sleuthkit-hfs-decmpfs-attr-oob-read

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -01de0345edaa1ebf21dba6939a7c6bc7129e6e7d

    Affected versions

    ct-3.15.0

    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
    CVE-2026-120454 | CVE-DB