Race condition in the lockscreen feature in Mozilla Firefox OS before 2.5 allows physically proximate attackers to bypass an intended passc…

published 2016-01-09 10y ago modified 2026-06-17 4mo ago also EUVD-2015-8392

cvss: 6.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits: 0; none known

Race condition in the lockscreen feature in Mozilla Firefox OS before 2.5 allows physically proximate attackers to bypass an intended passcode requirement via unspecified vectors.

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Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.4	CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.9	AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

mozilla.org /security/announce/2015/mfsa2015-152.html
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1173284

Sources

CVE List CVE-2015-8511
NVD CVE-2015-8511

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