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CVE-2010-1128

31
FAUCET Score

CVE-2010-1128 describes a low-entropy issue in the Linear Congruential Generator (LCG) used in PHP versions prior to 5.2.13. This weakness makes it easier for attackers to predict values intended to be random, such as session cookies generated by the uniqid function, potentially leading to unauthorized access. The vulnerability has a CVSS score of 6.4, indicating a medium severity with network-based attacks, low complexity, and potential for partial confidentiality and integrity impact. While there is an ExploitDB entry for PHP 5.3.1 related to LCG entropy, there is no indication of active exploitation, Metasploit modules, or significant community discussion or media coverage for this specific CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.2.12CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.2.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*
5.2.1CPE matchmatch criteria
cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:*
5.2.2CPE matchmatch criteria
cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:*
5.2.3CPE matchmatch criteria
cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.94%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-33677 · Feb 26, 2010
This CVE's current EPSS score of 0.0794 is in the 92nd percentile among its peer group of 23,705 CVEs.

Social Chatter

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)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: php-0:4.3.9-3.31
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php-0:5.1.6-27.el5_5.3
View patch

Vendor Advisories (1)

redhatCVE-2010-1128Low

php: LCG entropy weakness

Feb 25, 2010

References

secunia.com / advisories/38708
Vendor Advisory
secunia.com / advisories/42410
php.net / ChangeLog-5.php
php.net / releases/5_2_13.php
Vendor Advisory
redhat.com / support/errata/RHSA-2010-0919.html
securityfocus.com / bid/38430
Exploit
vupen.com / english/advisories/2010/0479
PatchVendor Advisory
vupen.com / english/advisories/2010/3081