How severe is CVE-2010-1158?

CVE-2010-1158 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-1158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1158?

CVE-2010-1158 primarily affects Perl. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1158?

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

When was CVE-2010-1158 published?

CVE-2010-1158 was published on 2010-04-20 and last updated on 2026-06-16.

CVE-2010-1158

CVE-2010-1158 is a medium-severity vulnerability in Perl 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-189.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Perl
Published: 2010-04-20
Last modified: 2026-06-16

Description

Integer overflow in the regular expression engine in Perl 5.8.x allows context-dependent attackers to cause a denial of service (stack consumption and application crash) by matching a crafted regular expression against a long string.

Frequently asked questions

What is CVE-2010-1158?: Integer overflow in the regular expression engine in Perl 5.8.x allows context-dependent attackers to cause a denial of service (stack consumption and application crash) by matching a crafted regular expression against a long string.
How severe is CVE-2010-1158?: CVE-2010-1158 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-1158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1158?: CVE-2010-1158 primarily affects Perl. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1158?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1158 published?: CVE-2010-1158 was published on 2010-04-20 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:perl:perl:5.8.1:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.2:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.3:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.4:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.5:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.6:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.7:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.8:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.8.9:*:*:*:*:*:*:*

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