Is CVE-2013-4389 in the CISA KEV catalog?

No. CVE-2013-4389 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-4389?

CVE-2013-4389 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2013-4389?

CVE-2013-4389 has an EPSS score of 3.14% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-4389?

Upgrade rails to 3.2.15 or later.

CVE & CISA-KEV Catalog

CVE-2013-4389

MEDIUMEPSS 86th pctl

4.3

CVSS v2

NVD

Description

Multiple format string vulnerabilities in log_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x before 3.2.15 allow remote attackers to cause a denial of service via a crafted e-mail address that is improperly handled during construction of a log message.

CWE-134

How to fix

Remediation Available

railsNVD

Affected:>= 3.0.0, < 3.2.15Fixed in:3.2.15CVE-2013-4389derived from NVD

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

3.14%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Exploit1

groups.google.com

Third-Party Advisory5

Related Vulnerabilities

Other CWE-134 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13160	Critical	9.8	81%	-	Fix
CVE-2023-22374	High	8.5	73%	-	-
CVE-2012-1851	High	10.0	66%	-	-
CVE-2024-23113	Critical	9.8	62%	KEV	-
CVE-2012-3569	High	9.3	48%	-	-
CVE-2018-6317	Critical	9.1	44%	-	-

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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 2026-04-29.