Is CVE-2008-2108 in the CISA KEV catalog?

No. CVE-2008-2108 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-2108?

CVE-2008-2108 has a CVSS v3 base score of 9.8 (CRITICAL).

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

CVE-2008-2108 has an EPSS score of 4.29% (90th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2008-2108

CRITICALEPSS 90th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-331

How to fix

Remediation Available

phpNVD

Affected:>= 5.0.0, < 5.2.5Fixed in:5.2.5CVE-2008-2108derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.29%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.