6.9

CVE-2026-111154: sezero libtimidity Out-of-bounds Write

CVSS: 6.9v4.0MediumDeferred
AliasesDEBIAN-CVE-2026-111154UBUNTU-CVE-2026-111154
Published 15-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-111154 is a medium (CVSS 6.9) Out-of-bounds Write vulnerability in sezero libtimidity. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
38/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.13%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 15-10-2026
    PublishedVulnerability first disclosed.

Description

libTiMidity through 0.2.8 contains a stack out-of-bounds write vulnerability in the SoundFont loader that allows attackers to corrupt stack memory via unchecked generator operators in parse_gen. Attackers can supply a crafted .sf2 file with out-of-range pgen/igen operator values to write chosen 16-bit values near the stack Layer object, causing crashes and stack memory corruption.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

16-10-202622-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackmd.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • timidityAll versions (No fix recorded)
Sezero1 product
Ubuntu1 product
  • timidityAll versions (No fix recorded)

3 vendors · 3 products

References

7 links