How severe is CVE-2015-5961?

CVE-2015-5961 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2015-5961 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5961?

CVE-2015-5961 affects Mozilla Firefox Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-5961?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-5961 published?

CVE-2015-5961 was published on 2015-08-08 and last updated on 2026-06-17.

CVE-2015-5961

CVE-2015-5961 is a low-severity vulnerability in Mozilla Firefox Os with a CVSS 2.0 base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 3.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Mozilla Firefox Os
Published: 2015-08-08
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2015-5961?: CVE-2015-5961 has a CVSS 2.0 base score of 3.3, rated low severity.
Is CVE-2015-5961 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5961?: CVE-2015-5961 affects Mozilla Firefox Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-5961?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-5961 published?: CVE-2015-5961 was published on 2015-08-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*

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