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CVE-2007-4660

20
FAUCET Score

CVE-2007-4660 describes an unspecified vulnerability in the chunk_split function within PHP versions prior to 5.2.4, stemming from an incorrect size calculation. This flaw carries a CVSS score of 7.5, indicating high severity with potential for partial compromise of confidentiality, integrity, and availability, and can be exploited remotely with low attack complexity. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.2.3CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.61%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0261 is in the 71st 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

Vendor Advisories (1)

redhatCVE-2007-4660Moderate

php size calculation in chunk_split

Aug 30, 2007

References

secunia.com / advisories/26642
PatchVendor Advisory
secunia.com / advisories/27102
secunia.com / advisories/27864
secunia.com / advisories/28249
launchpad.net / bugs/173043
usn.ubuntu.com / 549-1
debian.org / security/2008/dsa-1444
gentoo.org / security/en/glsa/glsa-200710-02.xml
mandriva.com / security/advisories
mandriva.com / security/advisories
php.net / ChangeLog-5.php
Patch
php.net / releases/5_2_4.php
ubuntu.com / usn/usn-549-2
vupen.com / english/advisories/2007/3023