CVE-2018-19887: An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad

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MEDIUM 5.5DOWNGRADE

CVE-2018-19887 is a medium-severity flaw (CVSS 5.5) affecting freeware advanced audio coder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Advanced Audio Coder (FAAC) 1.29.9.2. The vulnerability causes a segmentation fault and application crash, which leads to denial of service in the book 4 case.

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	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-12-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: audiocoding

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

Am I affected?

Timeline

2018-12-06 00:29 UTCPublished CVE record published
2026-06-17 01:50 UTCUpdated Record last modified

audiocoding freeware advanced audio coder DOWNGRADE

Affected: 1.29.9.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.29.9.2

1. Check installed version

apt-cache policy freeware-advanced-audio-coder || rpm -q freeware-advanced-audio-coder || freeware-advanced-audio-coder --version

2. No fixed release: DOWNGRADE to a release before 1.29.9.2 (Debian / Ubuntu)

apt-cache madison freeware-advanced-audio-coder sudo apt install freeware-advanced-audio-coder=<VERSION_BEFORE_1.29.9.2> sudo apt-mark hold freeware-advanced-audio-coder

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

dnf --showduplicates list freeware-advanced-audio-coder sudo dnf downgrade freeware-advanced-audio-coder-<VERSION_BEFORE_1.29.9.2> sudo dnf versionlock add freeware-advanced-audio-coder

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-2018-19887?

freeware advanced audio coder: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-19887 being exploited?

CVE-2018-19887 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-2018-19887 affect?

CVE-2018-19887 affects freeware advanced audio coder. Severity is medium (CVSS 5.5). An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Advanced Audio Coder (FAAC) 1.29.9.2. The vulnerability causes a segmentation fault and application crash, which leads to denial of

How urgent is CVE-2018-19887?

Priority 40/100. Public exploit reference

Related CVEs

CVE-2018-19891 MEDIUM 5.5 DOWNGRADE An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad
CVE-2018-19890 MEDIUM 5.5 DOWNGRADE An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad
CVE-2018-19889 MEDIUM 5.5 DOWNGRADE An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad
CVE-2018-19888 MEDIUM 5.5 DOWNGRADE An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad
CVE-2018-19886 MEDIUM 5.5 DOWNGRADE An invalid memory address dereference was discovered in the huffcode function (libfaac/huff2.c) in Freeware Ad

References

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