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CVE-2015-8476

15
FAUCET Score

CVE-2015-8476 describes multiple CRLF injection vulnerabilities in PHPMailer versions prior to 5.2.14, affecting products like Debian Linux and PHPMailer itself. Attackers can exploit this by injecting arbitrary SMTP commands through CRLF sequences in email addresses or SMTP commands, leading to potential information disclosure (CVSS: 5.0, I:P). The attack vector is network-based with low complexity and no authentication required. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
<= 5.2.13CPE matchmatch criteria
cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.99%
Probability of exploitation in next 30 days
EPSS Percentile
78.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0199 is in the 67th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: phpmailer/phpmailerFixed in: 5.2.14
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-738m-f33v-qc2rlow

SMTP Injection in PHPMailer

Mar 5, 2020

References

lists.fedoraproject.org / pipermail/package-announce/2016-February/177130.html
lists.fedoraproject.org / pipermail/package-announce/2016-February/177139.html
github.com / PHPMailer/PHPMailer/commit/6687a96a18b8f12148881e4ddde795ae477284b0
github.com / PHPMailer/PHPMailer/releases/tag/v5.2.14
Vendor Advisory
debian.org / security/2015/dsa-3416
openwall.com / lists/oss-security/2015/12/04/5
openwall.com / lists/oss-security/2015/12/05/1
securityfocus.com / bid/78619