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CVE-2026-3994

Published: Mar 12, 2026

Modified: Mar 12, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

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.

Vendor	Product	Versions
rui314	mold	affected `2.40.0` affected `2.40.1` affected `2.40.2` affected `2.40.3` affected `2.40.4`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

References

VDB-350476 | rui314 mold Object File input-files.cc initialize_sections heap-based overflow

vdb-entry

technical-description

VDB-350476 | CTI Indicators (IOB, IOC, IOA)

signature

permissions-required

Submit #769772 | rui314 mold mold 2.40.4 and main-branch Heap-based Buffer Overflow

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

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