CVE-2016-5115: The avcodec_decode_audio4 function in libavcodec in libavformat 57.34.103, as used in MPlayer, allows remote a

Routine

MEDIUM 5.5DOWNGRADE

CVE-2016-5115 is a medium-severity flaw (CVSS 5.5) affecting libavformat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The avcodec_decode_audio4 function in libavcodec in libavformat 57.34.103, as used in MPlayer, allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mp3 file.

Why this priority

No elevated risk signals yet

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	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-125
Published	2017-02-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: libavformat project

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

Am I affected?

Timeline

2017-02-03 15:59 UTCPublished CVE record published
2026-06-17 00:48 UTCUpdated Record last modified

libavformat project libavformat DOWNGRADE

Affected: 57.34.103

Fixed in: no fixed release known

Safe to downgrade to: a release before 57.34.103

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 57.34.103 (Debian / Ubuntu)

apt-cache madison libavformat sudo apt install libavformat=<VERSION_BEFORE_57.34.103> sudo apt-mark hold libavformat

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

dnf --showduplicates list libavformat sudo dnf downgrade libavformat-<VERSION_BEFORE_57.34.103> sudo dnf versionlock add libavformat

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-2016-5115?

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

Is CVE-2016-5115 being exploited?

CVE-2016-5115 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-2016-5115 affect?

CVE-2016-5115 affects libavformat. Severity is medium (CVSS 5.5). The avcodec_decode_audio4 function in libavcodec in libavformat 57.34.103, as used in MPlayer, allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mp3 file.

How urgent is CVE-2016-5115?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2016-4352 MEDIUM 5.5 UPGRADE Integer overflow in the demuxer function in libmpdemux/demux_gif.c in Mplayer allows remote attackers to cause

References

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