CVE-2015-0821

NONECVSS 0.0

0.0

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.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 81.6%
KEV: Not listed

Published

February 25, 2015

Last Modified

May 6, 2026

References (18)

security@mozillahttp://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html
security@mozillahttp://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html
security@mozillahttp://www.mozilla.org/security/announce/2015/mfsa2015-25.html
security@mozillahttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
security@mozillahttp://www.securityfocus.com/bid/72758
security@mozillahttp://www.securitytracker.com/id/1031791
security@mozillahttp://www.ubuntu.com/usn/USN-2505-1
security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1111960
security@mozillahttps://security.gentoo.org/glsa/201504-01
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html
af854a3a-2127-422b-91ae-364da2661108http://www.mozilla.org/security/announce/2015/mfsa2015-25.html
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/72758
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1031791

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	firefox (36.0+build2-0ubuntu0.14.10.4) @ utopic	2026-05-28	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

UbuntuUSN-2505-1MEDIUM
Firefox vulnerabilities

Data Freshness Timeline

(refreshed 7× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:22 UTCEG score recompute
2026-05-28 13:22 UTCVendor advisory

Frequently asked(4)

What is CVE-2015-0821?

CVE-2015-0821 is a none vulnerability published on February 25, 2015. 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.

When was CVE-2015-0821 disclosed?

CVE-2015-0821 was first published in the National Vulnerability Database on February 25, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-0821 actively exploited?

CVE-2015-0821 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2015-0821?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-0821, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2015-0821

Explore →

Is Your Infrastructure Affected by CVE-2015-0821?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs