CVE-2015-4477

critical

Published 2015-08-16 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

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

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 2 releases

Version	Status	Fixed in
13.2	Affected	—
13.1	Affected	—

Ubuntu Affected 3 releases

Version	Status	Fixed in
15.04	Affected	—
14.04	Affected	—
12.04	Affected	—

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endIncluding":"39.0.3"}`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

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