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CVE-2016-10074

61
FAUCET Score

CVE-2016-10074 is a critical remote code execution vulnerability affecting Swift Mailer versions prior to 5.4.5. Attackers can exploit this flaw by injecting a backslash double quote character into the From, ReturnPath, or Sender headers of an email, allowing them to pass extra parameters to the mail command and execute arbitrary code. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. Exploit code is publicly available, including multiple entries on ExploitDB, and it has garnered significant community discussion and media coverage, indicating its high profile and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.4CPE matchmatch criteria
cpe:2.3:a:swiftmailer:swiftmailer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
41.83%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-42221 · Jun 21, 2017
This CVE's current EPSS score of 0.4183 is in the 96th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: swiftmailer/swiftmailerFixed in: 5.4.5
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-pr44-4jfr-286mcritical

Swift Mailer mail transport Command Injection

May 17, 2022

References

packetstormsecurity.com / files/140290/SwiftMailer-Remote-Code-Execution.html
ExploitThird Party Advisory
seclists.org / fulldisclosure/2016/Dec/86
ExploitMailing List
github.com / swiftmailer/swiftmailer/blob/5.x/CHANGES
PatchVendor Advisory
legalhackers.com / advisories/SwiftMailer-Exploit-Remote-Code-Exec-CVE-2016-10074-Vuln.html
ExploitTechnical DescriptionThird Party Advisory
exploit-db.com / exploits/40972
ExploitThird Party Advisory
exploit-db.com / exploits/40986
exploit-db.com / exploits/42221
debian.org / security/2017/dsa-3769
securityfocus.com / bid/95140
Third Party AdvisoryVDB Entry