CVE-2015-8512 — The lockscreen feature in Mozilla Firefox OS before 2.5 does not properly restrict failed authentication attempts, which makes it easier for physically proximate attackers to obtain access by entering many passcode guesses

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MEDIUM

The lockscreen feature in Mozilla Firefox OS before 2.5 does not properly restrict failed authentication attempts, which makes it easier for physically proximate attackers to obtain access by entering many passcode guesses

Published Jan 9, 2016

4.6

MEDIUM

CVSS 3.0

EPSS 0.32%

Description

The lockscreen feature in Mozilla Firefox OS before 2.5 does not properly restrict failed authentication attempts, which makes it easier for physically proximate attackers to obtain access by entering many passcode guesses.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.32% 0.00315

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00315

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.32% (0.00315)	22.10th	v5 (v2026.06.15)
Jun 15, 2026	0.32% (0.00315)	22.98th	v5 (v2026.06.15)
Mar 17, 2025	0.07% (0.00073)	19.72th	v4 (v2025.03.14)
Dec 12, 2024	0.07% (0.00074)	34.06th	v3 (v2023.03.01)
Jun 20, 2024	0.07% (0.00074)	32.11th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00074)	30.07th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)

Weaknesses (1)

CWE-284

References (2)

http://www.mozilla.org/security/announce/2015/mfsa2015-151.html
x_refsource_CONFIRMVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1181571
x_refsource_CONFIRM

Link	Providers	Tags
http://www.mozilla.org/security/announce/2015/mfsa2015-151.html		x_refsource_CONFIRMVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1181571		x_refsource_CONFIRM

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mozilla

Published Jan 9, 2016

Updated Aug 6, 2024

Reserved Dec 8, 2015

Link CVE-2015-8512

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-8512

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-8512