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CVE-2007-1718

31
FAUCET Score

CVE-2007-1718 is a critical CRLF injection vulnerability affecting the mail function in PHP versions 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1. This flaw allows remote attackers to inject arbitrary email headers, potentially leading to spam attacks, by manipulating the Subject or To parameters with specific control character sequences. The vulnerability carries a high CVSS score of 7.8, indicating a severe risk. It can be exploited remotely with low attack complexity and no authentication required, allowing for complete integrity compromise (e.g., header injection) without impacting confidentiality or availability. While not listed on the KEV catalog and lacking active Metasploit or Nuclei modules, an exploit for PHP 5.2.1 demonstrating folded mail header injection is available on ExploitDB. Despite this, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:beta_4_patch1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:beta1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:beta2:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.69%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-29784 · Nov 26, 2007
This CVE's current EPSS score of 0.0669 is in the 89th percentile among its peer group of 51,551 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: php-0:4.3.2-40.ent
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: php-0:4.3.9-3.22.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php-0:5.1.6-11.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Web Application Stack for RHEL 4Fixed in: php-0:5.1.6-3.el4s1.6
View patch

Vendor Advisories (1)

redhatCVE-2007-1718Low

security flaw

Mar 26, 2007

References

rhn.redhat.com / errata/RHSA-2007-0155.html
secunia.com / advisories/24909
secunia.com / advisories/24924
secunia.com / advisories/24965
secunia.com / advisories/25025
secunia.com / advisories/25056
secunia.com / advisories/25057
secunia.com / advisories/25062
secunia.com / advisories/25445
security.gentoo.org / glsa/glsa-200705-19.xml
exchange.xforce.ibmcloud.com / vulnerabilities/33516
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10951
us2.php.net / releases/5_2_2.php
debian.org / security/2007/dsa-1282
debian.org / security/2007/dsa-1283
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_32_php.html
php-security.org / MOPB/MOPB-34-2007.html
Exploit
redhat.com / support/errata/RHSA-2007-0153.html
redhat.com / support/errata/RHSA-2007-0162.html
securityfocus.com / bid/23145
Exploit
securitytracker.com / id
ubuntu.com / usn/usn-455-1