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TI-2026-05320 Aliases CVE-2026-6068GHSA-wwjw-6p2f-76rh

Use after free in NASM

Priority HIGH 80CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-file buffer is freed before the pointer is used, allowing for data corruption or remote code execution.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00433 37th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
NASMNASMnasm-3.02rc5—No fix listedCNA
  • NASM VendorNASM Affected nasm-3.02rc5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nasm:netwide_assembler:3.02:rc5:*:*:*:*:*:*3.02 rc5VulnerableNASM
  • cpe:2.3:a:nasm:netwide_assembler:3.02:rc5:*:*:*:*:*:* Versions 3.02 rc5 Vulnerable ·NASM

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6068
  2. 2026-10-03 Alias added: GHSA-wwjw-6p2f-76rh

References

Exploit 2

  • 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
  • TI-2023-20014 Null pointer dereference in ieee_write_file in nasm 2.16rc0 allows attackers to cause a denial of service (crash). 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