CVE-2019-14247: The scan() function in mad.c in mpg321 0.3.2 allows remote attackers to trigger an out-of-bounds write via a z

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MEDIUM 5.5DOWNGRADE

CVE-2019-14247 is a medium-severity flaw (CVSS 5.5) affecting mpg321. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The scan() function in mad.c in mpg321 0.3.2 allows remote attackers to trigger an out-of-bounds write via a zero bitrate in an MP3 file.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-07-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mpg321 project

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

Am I affected?

Timeline

2019-07-24 04:15 UTCPublished CVE record published
2026-06-17 02:18 UTCUpdated Record last modified

mpg321 project mpg321 DOWNGRADE

Affected: 0.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.3.2

1. Check installed version

apt-cache policy mpg321 || rpm -q mpg321 || mpg321 --version

2. No fixed release: DOWNGRADE to a release before 0.3.2 (Debian / Ubuntu)

apt-cache madison mpg321 sudo apt install mpg321=<VERSION_BEFORE_0.3.2> sudo apt-mark hold mpg321

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mpg321 sudo dnf downgrade mpg321-<VERSION_BEFORE_0.3.2> sudo dnf versionlock add mpg321

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2019-14247?

mpg321: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-14247 being exploited?

CVE-2019-14247 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-2019-14247 affect?

CVE-2019-14247 affects mpg321. Severity is medium (CVSS 5.5). The scan() function in mad.c in mpg321 0.3.2 allows remote attackers to trigger an out-of-bounds write via a zero bitrate in an MP3 file.

How urgent is CVE-2019-14247?

Priority 42/100. Public exploit reference

References

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