CVE-2015-4515: mozilla firefox
Vulnerability summary
CVE-2015-4515 is a medium (CVSS 4.3) vulnerability in mozilla firefox. EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75.5% of scored vulnerabilities.
Not severe (CVSS 4.3, 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
- 05-11-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Mozilla Firefox before 42.0, when NTLM v1 is enabled for HTTP authentication, allows remote attackers to obtain sensitive hostname information by constructing a crafted web site that sends an NTLM request and reads the Workstation field of an NTLM type 3 message.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.58%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
Decrease -0.25 pp
From 1.84% 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.
Mozilla1 product
- firefox≤ 41.0.2
Ubuntu1 product
- firefox< 42.0+build2-0ubuntu0.14.04.1
2 vendors · 2 products
References
11 links- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1046421X Refsource CONFIRM