bulk_extractor has Heap-based Buffer Overflow vulnerability_CVE-2026-24857

5.5 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Description

`bulk_extractor` is a digital forensics exploitation tool. Starting in version 1.4, `bulk_extractor`’s embedded unrar code has a heap‑buffer‑overflow in the RAR PPM LZ decoding path. A crafted RAR inside a disk image causes an out‑of‑bounds write in `Unpack::CopyString`, leading to a crash under ASAN (and likely a crash or memory corruption in production builds). There's potential for using this for RCE. As of time of publication, no known patches are available.

Basic Information

ID CVE-2026-24857

Source GitHub_M

Published Jan 28, 2026 at 21:30

Affected Product

Vendor simsong

Product bulk_extractor

Version >= 1.4, <= 2.1.1

Affected Versions simsong bulk_extractor >= 1.4, <= 2.1.1

CWE Classification

CWE-122

References

github.com /simsong/bulk_extractor/security/advisories/GHSA-rh8m-9xrx-q64q

{
    "lastseen": "",
    "description": "`bulk_extractor` is a digital forensics exploitation tool. Starting in version 1.4, `bulk_extractor`\u2019s embedded unrar code has a heap\u2011buffer\u2011overflow in the RAR PPM LZ decoding path. A crafted RAR inside a disk image causes an out\u2011of\u2011bounds write in `Unpack::CopyString`, leading to a crash under ASAN (and likely a crash or memory corruption in production builds). There's potential for using this for RCE. As of time of publication, no known patches are available.",
    "published": "2026-01-28T21:30:35.410Z",
    "modified": "2026-01-28T21:30:35.410Z",
    "type": "cve",
    "title": "bulk_extractor has Heap-based Buffer Overflow vulnerability",
    "source": "GitHub_M",
    "references": "https://github.com/simsong/bulk_extractor/security/advisories/GHSA-rh8m-9xrx-q64q",
    "id": "CVE-2026-24857",
    "bulletinFamily": "",
    "cwe": [
        "CWE-122"
    ],
    "cvelist": null,
    "sourceData": "simsong bulk_extractor >= 1.4, <= 2.1.1",
    "sourceHref": "",
    "cvss": {
        "score": 5.5,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "bulk_extractor",
    "version": ">= 1.4, <= 2.1.1",
    "vendor": "simsong",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}