CVE-2015-5961

The COPPA error page in the Accounts setup dialog in Mozilla Firefox OS before 2.2 embeds content from an external web server URL into the System process, which allows man-in-the-middle attackers to bypass intended access restrictions by spoofing that server.

Published: 2015-08-08 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5961 is rated Low Risk (22.8/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-5961

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2023-03-07 0.95% 0.07% -0.88%
2 2022-02-04 — 0.95% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5961

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.3 2.0 LOW
AV:A/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 6.5 2.9 [email protected]

Weakness enumeration for CVE-2015-5961

Affected software / configurations for CVE-2015-5961

Vendor Product Version Raw CPE
mozilla firefox_os <= 2.1.0 cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*

References for CVE-2015-5961

cvelogic Threat Intelligence