CVE-2015-7211: fedoraproject fedora Improper Input Validation
Vulnerability summary
CVE-2015-7211 is a medium (CVSS 5.0) Improper Input Validation vulnerability in fedoraproject fedora. EPSS estimates a 2.54% chance of exploitation in the next 30 days, higher than 85% of scored vulnerabilities.
Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 16-12-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Mozilla Firefox before 43.0 mishandles the # (number sign) character in a data: URI, which allows remote attackers to spoof web sites via unspecified vectors.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
2.54%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.54% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Fedoraproject1 product
- fedoraEOL22 | 23
Mozilla1 product
- firefox≤ 42.0
Ubuntu1 product
- firefox< 43.0+build1-0ubuntu0.14.04.1
4 vendors · 5 products
References
15 links- bugzilla.mozilla.org/show_bug.cgi?id=1221444X Refsource CONFIRM
- lists.fedoraproject.org/pipermail/package-announce/2015-December/174253.htmlVendor AdvisoryX Refsource FEDORA
- lists.fedoraproject.org/pipermail/package-announce/2015-December/174083.htmlVendor AdvisoryX Refsource FEDORA