CVE-2013-1667

CVE-2013-1667 is a high-severity vulnerability in Perl with a CVSS 2.0 base score of 7.5. 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-399.

Key facts

Description

The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.

Frequently asked questions

What is CVE-2013-1667?
The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.
How severe is CVE-2013-1667?
CVE-2013-1667 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-1667 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1667?
CVE-2013-1667 primarily affects Perl. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-1667?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-1667 published?
CVE-2013-1667 was published on 2013-03-14 and last updated on 2026-06-16.

References

Affected products (61)

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