CVE-2018-14521: An issue was discovered in aubio 0.4.6

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HIGH 8.8DOWNGRADE

CVE-2018-14521 is a high-severity flaw (CVSS 8.8) affecting aubio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in aubio 0.4.6. A SEGV signal can occur in aubio_source_avcodec_readframe in io/source_avcodec.c, as demonstrated by aubiomfcc.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-07-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aubio

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

Am I affected?

Timeline

2018-07-23 08:29 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

aubio aubio DOWNGRADE

Affected: 0.4.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.4.6 (Debian / Ubuntu)

apt-cache madison aubio sudo apt install aubio=<VERSION_BEFORE_0.4.6> sudo apt-mark hold aubio

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

dnf --showduplicates list aubio sudo dnf downgrade aubio-<VERSION_BEFORE_0.4.6> sudo dnf versionlock add aubio

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-2018-14521?

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

Is CVE-2018-14521 being exploited?

CVE-2018-14521 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-2018-14521 affect?

CVE-2018-14521 affects aubio. Severity is high (CVSS 8.8). An issue was discovered in aubio 0.4.6. A SEGV signal can occur in aubio_source_avcodec_readframe in io/source_avcodec.c, as demonstrated by aubiomfcc.

How urgent is CVE-2018-14521?

Priority 54/100. High severity; Public exploit reference

Related CVEs

CVE-2018-19802 HIGH 7.5 UPGRADE aubio v0.4.0 to v0.4.8 has a new_aubio_onset NULL pointer dereference.
CVE-2018-19801 HIGH 7.5 UPGRADE aubio v0.4.0 to v0.4.8 has a NULL pointer dereference in new_aubio_filterbank via invalid n_filters.
CVE-2018-19800 CRITICAL 9.8 UPGRADE aubio v0.4.0 to v0.4.8 has a Buffer Overflow in new_aubio_tempo.
CVE-2018-14523 HIGH 8.8 DOWNGRADE MITIGATE An issue was discovered in aubio 0.4.6
CVE-2018-14522 HIGH 8.8 DOWNGRADE MITIGATE An issue was discovered in aubio 0.4.6

References

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