`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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 29 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Jan 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Simsong
Simsong bulk Extractor
Vendors & Products Simsong
Simsong bulk Extractor

Wed, 28 Jan 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title bulk_extractor has Heap-based Buffer Overflow vulnerability
Weaknesses CWE-122
References
Metrics cvssV4_0

{'score': 5.5, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-29T18:01:12.601Z

Reserved: 2026-01-27T14:51:03.061Z

Link: CVE-2026-24857

cve-icon Vulnrichment

Updated: 2026-01-29T16:03:06.194Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-28T22:15:56.350

Modified: 2026-01-29T18:16:17.293

Link: CVE-2026-24857

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-29T09:08:24Z

Weaknesses