How severe is CVE-2012-4466?

CVE-2012-4466 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-4466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4466?

CVE-2012-4466 primarily affects Ruby-lang Ruby. In total, 34 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-4466 published?

CVE-2012-4466 was published on 2013-04-25 and last updated on 2026-06-16.

CVE-2012-4466

CVE-2012-4466 is a medium-severity vulnerability in Ruby-lang Ruby with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Ruby-lang Ruby
Published: 2013-04-25
Last modified: 2026-06-16

Description

Ruby 1.8.7 before patchlevel 371, 1.9.3 before patchlevel 286, and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the name_err_mesg_to_str API function, which marks the string as tainted, a different vulnerability than CVE-2011-1005.

Frequently asked questions

What is CVE-2012-4466?: Ruby 1.8.7 before patchlevel 371, 1.9.3 before patchlevel 286, and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the name_err_mesg_to_str API function, which marks the string as tainted, a different vulnerability than CVE-2011-1005.
How severe is CVE-2012-4466?: CVE-2012-4466 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-4466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4466?: CVE-2012-4466 primarily affects Ruby-lang Ruby. In total, 34 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4466 published?: CVE-2012-4466 was published on 2013-04-25 and last updated on 2026-06-16.

References

Affected products (34)

cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p160:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p173:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p174:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p248:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p249:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p299:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p301:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p302:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p330:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p334:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p352:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p357:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p358:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p370:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p72:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:rc2:*:*:*:*:*:*

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