Medium 5.3Published Mar 12, 2026

CVE-2026-3994rui314 mold Object File input-files.cc initialize_sections heap-based overflow

Updated under an hour ago (Oct 27, 2026, 5:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for rui314 mold

Exploited in the last 30 days

A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X86_64::initialize_sections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-122, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Mar 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rui314 mold rui314:mold (from the name)	2.40.0; 2.40.1; 2.40.2; 2.40.3; 2.40.4	CNA record

References

References

https://vuldb.com/?id.350476	vdb-entry, technical-description
https://vuldb.com/?ctiid.350476	signature, permissions-required
https://vuldb.com/?submit.769772	third-party-advisory
https://github.com/rui314/mold/issues/1548	issue-tracking
https://github.com/oneafter/0209/blob/main/mo2/repro	exploit
https://github.com/rui314/mold/	product

The CVE record on cve.org NVD's entry

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.