Is CVE-2008-2108 being actively exploited?

CVE-2008-2108 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2008-2108?

CVE-2008-2108 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2008-2108

CRITICAL · CVSS 9.8EPSS 4.3%EU EUVD

The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 64-bit systems, performs a multiplication that generates a portion of zero bits during conversion due to insufficient precision, which produces 24 bits of entropy and simplifies brute force attacks against protection mechanisms that use the rand and mt_rand functions.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-331
EPSS score: 4.3% (91th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2008-2105)
Published: May 7, 2008
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2008-2105 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
fedoraproject / fedora
fedoraproject / fedora
php / php

References

http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html(Broken Link, Exploit)
http://secunia.com/advisories/30757(Broken Link)
http://secunia.com/advisories/30828(Broken Link)
http://secunia.com/advisories/31119(Broken Link)
http://secunia.com/advisories/31124(Broken Link)
http://secunia.com/advisories/31200(Broken Link)
http://secunia.com/advisories/32746(Broken Link)
http://secunia.com/advisories/35003(Broken Link)
http://security.gentoo.org/glsa/glsa-200811-05.xml(Third Party Advisory)
http://securityreason.com/securityalert/3859(Mailing List)
http://www.debian.org/security/2009/dsa-1789(Mailing List)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:125(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:126(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:127(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:128(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:129(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:130(Broken Link)
http://www.redhat.com/support/errata/RHSA-2008-0505.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2008-0544.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2008-0545.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2008-0546.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2008-0582.html(Broken Link)
http://www.securityfocus.com/archive/1/491683/100/0/threaded(Broken Link, Third Party Advisory, VDB Entry)
http://www.sektioneins.de/advisories/SE-2008-02.txt(Broken Link, Exploit)
http://www.ubuntu.com/usn/usn-628-1(Third Party Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/42226(Third Party Advisory, VDB Entry)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10844(Broken Link)
https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00773.html(Mailing List)
https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00779.html(Mailing List)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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