Is CVE-2008-2663 in the CISA KEV catalog?

No. CVE-2008-2663 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-2663?

CVE-2008-2663 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2008-2663?

CVE-2008-2663 has an EPSS score of 4.46% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-2663?

Upgrade Ruby 3.0 to 1.8.5.231 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2008-2663

HIGHEPSS 90th pctl

10.0

CVSS v2

NVD

Description

Multiple integer overflows in the rb_ary_store function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, and 1.8.7 before 1.8.7-p22 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors, a different issue than CVE-2008-2662, CVE-2008-2664, and CVE-2008-2725. NOTE: as of 20080624, there has been inconsistent usage of multiple CVE identifiers related to Ruby. The CVE description should be regarded as authoritative, although it is likely to change.

CWE-190Integer Overflow

How to fix

Remediation Available

Ruby 3.0Windows application

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Ruby 3.1Windows application

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Ruby 3.2Windows application

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Ruby 3.2 with MSYS2Windows application

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Ruby 3.3Windows application

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Ruby 3.3 with MSYS2Windows application

Affected:1.8.7 1.8.7.22Fixed in:1.8.7.22RubyInstaller Team

Affected:1.8.5 1.8.5.231Fixed in:1.8.5.231RubyInstaller Team

Affected:1.8.6 1.8.6.230Fixed in:1.8.6.230RubyInstaller Team

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.46%probability of exploitation in 30 days

90thpercentile

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

References

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

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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.