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TI-2025-08094 Aliases CVE-2025-8843GHSA-fr9x-hqv8-c4hf

NASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow

Priority MEDIUM 55CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NASMNetwide Assember2.17rc0—No fix listedCNA
  • Netwide Assember VendorNASM Affected 2.17rc0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nasm:netwide_assembler:2.17:rc0:*:*:*:*:*:*2.17 rc0VulnerableNASM
  • cpe:2.3:a:nasm:netwide_assembler:2.17:rc0:*:*:*:*:*:* Versions 2.17 rc0 Vulnerable ·NASM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8843
  2. 2026-10-03 Alias added: GHSA-fr9x-hqv8-c4hf

References

Exploit 2

  • TI-2026-05320 Use after free in NASM CVSS 3.1CRITICAL 9.6
  • TI-2026-05321 Out-of-bounds write in NASM CVSS 3.1HIGH 7.5
  • TI-2026-05319 Out-of-bounds write in NASM CVSS 3.1HIGH 7.5
  • TI-2004-01165 Buffer overflow in the error function in preproc.c for NASM 0.98.38 1.2 allows attackers… CVSS 2.0HIGH 10.0
  • TI-2023-20017 Stack-based buffer over-read in disasm in nasm 2.16 allows attackers to cause a denial of service (crash). CVSS 3.1MEDIUM 5.5
  • TI-2023-20016 Stack-based buffer over-read in function disasm in nasm 2.16 allows attackers to cause a denial of service. CVSS 3.1MEDIUM 5.5
See all 74 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences