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CVE-2015-8511

17
FAUCET Score

CVE-2015-8511 describes a race condition in the lockscreen feature of Mozilla Firefox OS before version 2.5. This vulnerability allows a physically proximate attacker to bypass the passcode requirement through unspecified means. With a CVSS score of 6.4 (Medium), exploitation requires high attack complexity but grants high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2CPE matchmatch criteria
cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.4MEDIUM

CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.5
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 28th percentile among its peer group of 152 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
mozilla.org / security/announce/2015/mfsa2015-152.html
Vendor Advisory