CVE-2026-3994

MEDIUM 5.3

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

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-122 CWE-119
Vendor	rui314
Product	mold
Published	Mar 12, 2026
Last Updated	Mar 12, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

rui314 / mold

2.40.0 2.40.1 2.40.2 2.40.3 2.40.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.350476 vuldb.com: https://vuldb.com/?ctiid.350476 vuldb.com: https://vuldb.com/?submit.769772 github.com: https://github.com/rui314/mold/issues/1548 github.com: https://github.com/oneafter/0209/blob/main/mo2/repro github.com: https://github.com/rui314/mold/

Credits

🔍 Oneafter (VulDB User)