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Medium 5.5Published Jan 28, 2026

CVE-2026-24857bulk_extractor has Heap-based Buffer Overflow vulnerability

Updated under an hour ago ()

Does this affect you?

It affects simsong bulk_extractor. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

`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
5.5 MEDIUM (v4.0, CNA)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
Weakness (CWE)
CWE-122
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Jan 29, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
simsong bulk_extractor
simsong:bulk_extractor (from the name)
from 1.4, <= 2.1.1
CNA record
simsong bulk_extractor
simsong:bulk_extractor
from 1.4
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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