Read the docs
TI-2026-68422 Aliases CVE-2026-105839GHSA-w386-36c3-r8wv

Integer overflow in libmikmod OKT loader allows heap buffer overflow

Priority LOW 38CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

libmikmod before 3.3.14 contains an integer overflow (CWE-190) in the Oktalyzer loader function OKT_doPBOD(). A crafted OKT module whose SLEN chunk wraps the 16-bit numtrk value causes writes past the allocated track pointers on the heap. A local attacker can crash the application or execute code if a user opens the crafted module.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

libmikmod before 3.3.14 contains an integer overflow in the Oktalyzer loader OKT_doPBOD() that allows attackers to cause heap buffer overflow via crafted track counts. Attackers can supply an OKT module whose SLEN chunk wraps the 16-bit numtrk value, causing PBOD writes past allocated track pointers for crashes or code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00146 3rd percentileScored 2026-11-07
Fix Fixed libmikmod (sezero): 3.3.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
sezerolibmikmodbefore 3.3.143.3.14Patch availableCNA
  • libmikmod Vendorsezero Affected before 3.3.14 Fixed in 3.3.14 Patch available CNA

Remediation

Update libmikmod to version 3.3.14, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA libmikmod (sezero) Fixed in 3.3.14

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    sezero libmikmod 3.3.14

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-68420 libmikmod Heap Buffer Overflow via DSM Loader Integer OverflowPriority LOW 38
    • TI-2026-68421 Heap out-of-bounds read in libmikmod IT module loaderPriority LOW 29
    Show all 3 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-105839
  2. 2026-10-06 Alias added: GHSA-w386-36c3-r8wv
  3. 2026-10-06 CISA SSVC decision points changed
  4. 2026-10-06 Priority changed: MEDIUM → LOW
  5. 2026-10-07 Affected versions changed · Red Hat
  6. 2026-10-07 CVSS score added · Red Hat

References

Patch 1

Other 3

  • TI-2026-74940 Out-of-bounds access in libTiMidity via crafted SoundFont files CVSS 4.0MEDIUM 6.9
  • TI-2026-74939 Out-of-bounds read in libTiMidity SoundFont loader CVSS 4.0MEDIUM 6.9
  • TI-2026-74938 Stack out-of-bounds write in libTiMidity SoundFont loader CVSS 4.0MEDIUM 6.9
  • TI-2026-74950 Heap out-of-bounds read in libmikmod IMF module loader CVSS 4.0MEDIUM 6.8
  • TI-2026-74949 Out-of-bounds read in libmikmod MTM loader via channel count CVSS 4.0MEDIUM 6.8
  • TI-2026-68420 libmikmod Heap Buffer Overflow via DSM Loader Integer Overflow CVSS 4.0HIGH 8.5
See all 7 →

Sources

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