Is CVE-2015-7193 in the CISA KEV catalog?

No. CVE-2015-7193 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-7193?

CVE-2015-7193 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2015-7193?

CVE-2015-7193 has an EPSS score of 2.84% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-7193?

Upgrade firefox on ubuntu 14.04 to 42.0+build2-0ubuntu0.14.04.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-7193

HIGHEPSS 85th pctl

7.5

CVSS v2

NVD

Description

Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly follow the CORS cross-origin request algorithm for the POST method in situations involving an unspecified Content-Type header manipulation, which allows remote attackers to bypass the Same Origin Policy by leveraging the lack of a preflight-request step.

CWE-254

How to fix

Remediation Available

firefoxUbuntu

Fixed in:42.0+build2-0ubuntu0.14.04.1USN-2785-1

thunderbirdUbuntu

Fixed in:1:38.4.0+build3-0ubuntu0.14.04.1USN-2819-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.84%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.