CVE-2015-4477

critical
Published 2015-08-16 · Modified 2026-05-06
CVSS v3
CVSS v2
10.0
VIR risk
10.0

Description

Use-after-free vulnerability in the MediaStream playback feature in Mozilla Firefox before 40.0 allows remote attackers to execute arbitrary code via unspecified use of the Web Audio API.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security@mozilla.org — http://www.mozilla.org/security/announce/2015/mfsa2015-81.html

OS impact

OSVersionStatusFixed in
ubuntu ubuntu12.04affected
ubuntu ubuntu14.04affected
ubuntu ubuntu15.04affected
suse suse13.1affected
suse suse13.2affected

Application impact

VendorProductVersionsFixed
mozillafirefox{"endIncluding":"39.0.3"}

References

Verify integrity in audit chain (admin only). AS-IS.