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    CVE-2026-42482

    A stack-based buffer overflow in mangle_to_hex_lower() and mangle_to_hex_upper() in src/rp_cpu.c in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted rule file, or via the -j or -k rule options used with password candidates of 128 or more characters. The vulnerability is caused by a bounds check that fails to account for the 2x expansion that occurs when password bytes are converted to hexadecimal.

    Published:May 1, 2026
    Last Modified:May 2, 2026
    EPS:May 1, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Hashcat
    Product
    Hashcat

    Exploits

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

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    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-2026-42483 (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…
    CVE-2026-42484 (CVSS 9.8) — A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to…

    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