How severe is CVE-2012-4464?

CVE-2012-4464 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-4464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4464?

CVE-2012-4464 primarily affects Ruby-lang Ruby. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4464?

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

When was CVE-2012-4464 published?

CVE-2012-4464 was published on 2013-04-25 and last updated on 2026-06-16.

CVE-2012-4464

CVE-2012-4464 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: 2% (80th 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 1.9.3 before patchlevel 286 and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the (1) exc_to_s or (2) name_err_to_s API function, which marks the string as tainted, a different vulnerability than CVE-2012-4466. NOTE: this issue might exist because of a CVE-2011-1005 regression.

Frequently asked questions

What is CVE-2012-4464?: Ruby 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 (1) exc_to_s or (2) name_err_to_s API function, which marks the string as tainted, a different vulnerability than CVE-2012-4466. NOTE: this issue might exist because of a CVE-2011-1005 regression.
How severe is CVE-2012-4464?: CVE-2012-4464 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-4464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4464?: CVE-2012-4464 primarily affects Ruby-lang Ruby. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4464 published?: CVE-2012-4464 was published on 2013-04-25 and last updated on 2026-06-16.

References

Affected products (11)

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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