---
title: "CVE-2026-105839: libmikmod - Integer Overflow"
description: "libmikmod before 3.3.14 contains an integer overflow in the Oktalyzer loader OKT_doPBOD() caused by crafted track counts in SLEN chunk, letting attackers cause heap buffer overflow for crashes or code execution, exploit requires crafted OKT module."
url: https://panop.io/threat-heartbeat/CVE-2026-105839/
---

# CVE-2026-105839 libmikmod - Integer Overflow

libmikmod before 3.3.14 contains an integer overflow in the Oktalyzer loader OKT\_doPBOD() caused by crafted track counts in SLEN chunk, letting attackers cause heap buffer overflow for crashes or code execution, exploit requires crafted OKT module.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.15% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105839)

## Details

Type

Integer Overflow

Impact

Remote Code Execution, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-190](https://cwe.mitre.org/data/definitions/190.html)

## Vendor fix

Upgrade to version 3.3.14 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105839](https://nvd.nist.gov/vuln/detail/CVE-2026-105839)
- [https://www.vulncheck.com/advisories/libmikmod-before-3.3.14-heap-buffer-overflow-via-okt-loader-okt-dopbod](https://www.vulncheck.com/advisories/libmikmod-before-3.3.14-heap-buffer-overflow-via-okt-loader-okt-dopbod)
- [https://github.com/sezero/mikmod](https://github.com/sezero/mikmod)
- [https://github.com/sezero/mikmod/blob/libmikmod-3.3.13/libmikmod/loaders/load\_okt.c#L286](https://github.com/sezero/mikmod/blob/libmikmod-3.3.13/libmikmod/loaders/load_okt.c#L286)
- [https://github.com/sezero/mikmod/blob/libmikmod-3.3.14/libmikmod/NEWS](https://github.com/sezero/mikmod/blob/libmikmod-3.3.14/libmikmod/NEWS)
- [https://github.com/sezero/mikmod/commit/097b69281fad6ba38a553569e6f55dbfdd71dc2a](https://github.com/sezero/mikmod/commit/097b69281fad6ba38a553569e6f55dbfdd71dc2a)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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