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    CVE-2026-42484

    A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.

    Published:May 1, 2026
    Last Modified:May 2, 2026
    EPS:May 1, 2026
    EPSS Score:
    CVSS Score:9.8

    Affected Products

    Vendor
    Hashcat
    Product
    Hashcat

    Exploits

    https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91fhttps://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-68768 (CVSS 6.9) — hashcat contains a heap-based buffer overflow (out-of-bounds write) in the outfile_write() function in src/out…
    CVE-2026-68767 (CVSS 6.9) — hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer wh…
    CVE-2026-68766 (CVSS 8.5) — hashcat fails to restrict command-line options when parsing restore files, allowing attackers to inject output…
    CVE-2026-68765 (CVSS 5.2) — hashcat master branch builds after v7.1.2 contain a heap buffer overflow vulnerability in the KeePass AESKDF/K…
    CVE-2026-42482 (CVSS 9.8) — A stack-based buffer overflow in mangle_to_hex_lower() and mangle_to_hex_upper() in src/rp_cpu.c in hashcat v7…
    CVE-2026-42483 (CVSS 9.8) — A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denia…

    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