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CVE-2011-3268

32
FAUCET Score

CVE-2011-3268 describes a critical buffer overflow vulnerability in the crypt function of PHP versions prior to 5.3.7, affecting PHP installations. This flaw carries a CVSS score of 10.0, indicating maximum severity with a network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.3.6CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:php:php:1.0:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:php:php:2.0:*:*:*:*:*:*:*
2.0b10CPE matchmatch criteria
cpe:2.3:a:php:php:2.0b10:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.72%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0572 is in the 87th percentile among its peer group of 51,506 CVEs.

Social Chatter

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-2011-3268Low

PHP crash in crypt() from long salt

Aug 17, 2011

References

lists.apple.com / archives/security-announce/2012/Feb/msg00000.html
osvdb.org / 74738
exchange.xforce.ibmcloud.com / vulnerabilities/69427
support.apple.com / kb/HT5130
svn.php.net / viewvc/php/php-src/branches/PHP_5_3/ext/standard/php_crypt_r.c
mandriva.com / security/advisories
php.net / archive/2011.php
php.net / ChangeLog-5.php
securityfocus.com / bid/49241