CVE-2026-42482

A stack-based buffer overflow in mangletohexlower() and mangletohexupper() 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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42482.json",
    "cna_assigner": "mitre"
}

References

Affected packages

Git / github.com/hashcat/hashcat

Affected ranges

Type

GIT

Repo

https://github.com/hashcat/hashcat

Events

Introduced

c75f446c44cd3f0742035a1394416c39bee5ea8f

Last affected

c75f446c44cd3f0742035a1394416c39bee5ea8f

Database specific

{
    "cpe": "cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "7.1.2"
        },
        {
            "last_affected": "7.1.2"
        }
    ],
    "source": "CPE_STRING"
}

Affected versions

7.*

7.1.2

v7.*

v7.1.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42482.json"