Is CVE-2015-0821 being actively exploited?

CVE-2015-0821 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2015-0821?

CVE-2015-0821 has a CVSS 2.0 base score of 6.8 (MEDIUM).

CVE-2015-0821

MEDIUM · CVSS 6.8EPSS 2.3%EU EUVD

Mozilla Firefox before 36.0 allows user-assisted remote attackers to read arbitrary files or execute arbitrary JavaScript code with chrome privileges via a crafted web site that is accessed with unspecified mouse and keyboard actions.

Key facts

CVSS score: 6.8 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-264
EPSS score: 2.3% (83th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2015-0834)
Published: February 25, 2015
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-0834 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox
mozilla / firefox

and 187 more…

References

http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html(Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html(Third Party Advisory)
http://www.mozilla.org/security/announce/2015/mfsa2015-25.html(Vendor Advisory)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securityfocus.com/bid/72758(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1031791(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-2505-1(Third Party Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=1111960(Issue Tracking)
https://security.gentoo.org/glsa/201504-01

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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