CVE-2026-105839
CVE-2026-105839
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/sezero/mikmod/commit/097b69281fad6ba38a553569e6f55dbfdd71dc2a (patch)
- github.com/sezero/mikmod/blob/libmikmod-3.3.13/libmikmod/loaders/load_okt.c (technical-description)
- github.com/sezero/mikmod/blob/libmikmod-3.3.14/libmikmod/NEWS (release-notes)
- github.com/sezero/mikmod (product)
- www.vulncheck.com/advisories/libmikmod-before-3.3.14-heap-buffer-overflow-via-o… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-105839?
- CVE-2026-105839 is a high-severity vulnerability, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-10-06.
- How severe is CVE-2026-105839?
- High severity. CVSS v3 base score is 7.8 out of 10.