Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Simsong | Bulk Extractor | >= 1.4 |
Related Weaknesses (CWE)
References
- https://github.com/simsong/bulk_extractor/security/advisories/GHSA-rh8m-9xrx-q64ExploitVendor Advisory
- https://github.com/simsong/bulk_extractor/security/advisories/GHSA-rh8m-9xrx-q64ExploitVendor Advisory
FAQ
What is CVE-2026-24857?
CVE-2026-24857 is a vulnerability with a CVSS score of 9.8 (CRITICAL). `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 ins...
How severe is CVE-2026-24857?
CVE-2026-24857 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-24857?
Check the references section above for vendor advisories and patch information. Affected products include: Simsong Bulk Extractor.