How severe is CVE-2019-6956?

CVE-2019-6956 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2019-6956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6956?

CVE-2019-6956 primarily affects Audiocoding Freeware Advanced Audio Decoder 2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6956 published?

CVE-2019-6956 was published on 2019-01-25 and last updated on 2026-06-17.

CVE-2019-6956

CVE-2019-6956 is a high-severity vulnerability in Audiocoding Freeware Advanced Audio Decoder 2 with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Audiocoding Freeware Advanced Audio Decoder 2
Published: 2019-01-25
Last modified: 2026-06-17

Description

An issue was discovered in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. It is a buffer over-read in ps_mix_phase in libfaad/ps_dec.c.

Frequently asked questions

What is CVE-2019-6956?: An issue was discovered in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. It is a buffer over-read in ps_mix_phase in libfaad/ps_dec.c.
How severe is CVE-2019-6956?: CVE-2019-6956 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2019-6956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6956?: CVE-2019-6956 primarily affects Audiocoding Freeware Advanced Audio Decoder 2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6956 published?: CVE-2019-6956 was published on 2019-01-25 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:audiocoding:freeware_advanced_audio_decoder_2:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Audiocoding Freeware Advanced Audio Decoder 2

CVE-2019-15296 — High (CVSS 7.8): An issue was discovered in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The faad_resetbits function in…
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CVE-2018-20194 — High (CVSS 7.8): There is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in…
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