Is CVE-2015-8476 in the CISA KEV catalog?

No. CVE-2015-8476 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-8476?

CVE-2015-8476 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2015-8476?

CVE-2015-8476 has an EPSS score of 1.99% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-8476?

Upgrade libphp-phpmailer on debian 11 to 5.2.14+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-8476

MEDIUMEPSS 78th pctl

5.0

CVSS v2

NVD

Description

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

CWE-20Improper Input Validation

How to fix

Remediation Available

libphp-phpmailerDebian

Fixed in:5.2.14+dfsg-1CVE-2015-8476

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

1.99%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Vendor Advisory1

github.com

Other references7

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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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.