CVE-2018-20861: libopenmpt before 0.3.11 allows a crash with certain malformed custom tunings in MPTM files.

Q: How do I fix CVE-2018-20861?

libopenmpt: upgrade to 0.3.11. Exact commands for each OS are on this page.

Q: Is CVE-2018-20861 being exploited?

CVE-2018-20861 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20861 affect?

CVE-2018-20861 affects libopenmpt. Severity is medium (CVSS 6.5). libopenmpt before 0.3.11 allows a crash with certain malformed custom tunings in MPTM files.

Q: How urgent is CVE-2018-20861?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2018-20861 is a medium-severity flaw (CVSS 6.5) affecting libopenmpt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

libopenmpt before 0.3.11 allows a crash with certain malformed custom tunings in MPTM files.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-20
Published	2019-07-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openmpt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-30 19:15 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

openmpt libopenmpt UPGRADE

Affected: < 0.3.11

Fixed in: 0.3.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libopenmpt || rpm -q libopenmpt || libopenmpt --version

2. UPGRADE to 0.3.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libopenmpt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libopenmpt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20861?

libopenmpt: upgrade to 0.3.11. Exact commands for each OS are on this page.

Is CVE-2018-20861 being exploited?

CVE-2018-20861 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20861 affect?

CVE-2018-20861 affects libopenmpt. Severity is medium (CVSS 6.5). libopenmpt before 0.3.11 allows a crash with certain malformed custom tunings in MPTM files.

How urgent is CVE-2018-20861?

Priority 39/100. No elevated risk signals yet.

Related CVEs

CVE-2019-17113 CRITICAL 9.8 UPGRADE In libopenmpt before 0.3.19 and 0.4.x before 0.4.9, ModPlug_InstrumentName and ModPlug_SampleName in libopenmp
CVE-2019-14383 MEDIUM 6.5 UPGRADE MITIGATE J2B in libopenmpt before 0.4.2 allows an assertion failure during file parsing with debug STLs.
CVE-2019-14382 MEDIUM 6.5 UPGRADE DSM in libopenmpt before 0.4.2 allows an assertion failure during file parsing with debug STLs.
CVE-2019-14381 HIGH 7.5 UPGRADE libopenmpt before 0.4.3 allows a crash due to a NULL pointer dereference when doing a portamento from an OPL i
CVE-2019-14380 MEDIUM 6.5 UPGRADE MITIGATE libopenmpt before 0.4.5 allows a crash during playback due to an out-of-bounds read in XM and MT2 files.

References

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