CVE-2026-3994
rui314 mold Object File input-files.cc initialize_sections heap-based overflow
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
rui314 mold Object File input-files.cc initialize_sections heap-based overflow
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.
- Record
CVE-2026-3994- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P - CVSS 3.1
- 5.3 Medium
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 - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R - CVSS 2.0
- 4.3
AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR - Weakness
- CWE-122, CWE-119
- Updated
- 2026-11-02
EUVDEUVD-2026-11537
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.
- Record
EUVD-2026-11537- CVSS 4.0
- 4.8 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w77x-v6v5-9x28
A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold:...
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.
- Record
GHSA-w77x-v6v5-9x28- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-119
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-3994- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS 2.0
- 4.3 Medium
AV:L/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-119, CWE-122
- Updated
- 2026-11-02
OSV
rui314 mold Object File input-files.cc initialize_sections heap-based overflow
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.
- Record
CVE-2026-3994- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-119, CWE-122
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-3994
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.
- Record
DEBIAN-CVE-2026-3994- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-3994
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.
- Record
UBUNTU-CVE-2026-3994- CVSS 4.0
- 1.9 Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moldDebian:12 |
All versions, plus listed versions 1.10.1+dfsg-11.11.0+dfsg-11.11.0+dfsg-1~exp12.1.0+dfsg-12.2.0+dfsg-1 Show 25 moreShow less2.3.1+dfsg-32.3.1+dfsg-42.3.2+dfsg-12.3.3+dfsg-12.30.0+dfsg-12.31.0+dfsg-12.32.0+dfsg-12.32.1+dfsg-12.32.1+dfsg-22.33.0+dfsg-12.34.0+dfsg-12.34.1+dfsg-12.35.0+dfsg-12.35.1+dfsg-12.36.0+dfsg-12.37.1+dfsg-12.4.0+dfsg-12.4.1+dfsg-12.40.4+dfsg-12.40.4+dfsg-22.40.4+dfsg-2.12.41.0+dfsg-12.41.0+dfsg-1.12.42.0+dfsg-12.42.1+dfsg-1 |
None known |
moldDebian:13 |
All versions, plus listed versions 2.37.1+dfsg-12.40.4+dfsg-12.40.4+dfsg-22.40.4+dfsg-2.12.41.0+dfsg-12.41.0+dfsg-1.12.42.0+dfsg-12.42.1+dfsg-1 |
None known |
moldDebian:14 |
All versions, plus listed versions 2.37.1+dfsg-12.40.4+dfsg-12.40.4+dfsg-22.40.4+dfsg-2.12.41.0+dfsg-12.41.0+dfsg-1.12.42.0+dfsg-12.42.1+dfsg-1 |
None known |
moldUbuntu:22.04:LTS |
All versions, plus listed versions 1.0.3+dfsg-2 |
None known |
moldUbuntu:24.04:LTS |
All versions, plus listed versions 1.11.0+dfsg-1ubuntu12.3.3+dfsg-12.4.0+dfsg-12.4.1+dfsg-12.30.0+dfsg-12.30.0+dfsg-1build1 |
None known |
moldUbuntu:25.10 |
All versions, plus listed versions 2.37.1+dfsg-1 |
None known |
moldUbuntu:26.10 |
All versions, plus listed versions 2.40.4+dfsg-2.1ubuntu12.41.0+dfsg-12.41.0+dfsg-1.12.42.0+dfsg-1 |
None known |
moldUbuntu:26.04:LTS |
All versions, plus listed versions 2.37.1+dfsg-12.40.4+dfsg-2.1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-3994 is a medium vulnerability (CVSS 4.8) in Rui314 Mold, published March 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. No source names a fixed version.