CVE-2018-20198

5.5 mediumEPSS 1.2%

A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.

Severity

CVSS 3.0

5.5 medium

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2018-12-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

audiocoding:freeware_advanced_audio_decoder_2

References

https://github.com/knik0/faad2/issues/23
https://lists.debian.org/debian-lts-announce/2019/05/msg00022.html
https://seclists.org/bugtraq/2019/Sep/28
https://security.gentoo.org/glsa/202006-17
https://www.debian.org/security/2019/dsa-4522

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