How severe is CVE-2013-2100?

CVE-2013-2100 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2013-2100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-2100?

CVE-2013-2100 affects Gentoo Portage. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-2100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2013-2100 published?

CVE-2013-2100 was published on 2014-09-29 and last updated on 2026-06-16.

CVE-2013-2100

CVE-2013-2100 is a critical-severity vulnerability in Gentoo Portage with a CVSS 2.0 base score of 9.3. 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-310.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Gentoo Portage
Published: 2014-09-29
Last modified: 2026-06-16

Description

The urlopen function in pym/portage/util/_urlopen.py in Gentoo Portage 2.1.12, when using HTTPS, does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and modify binary package lists via a crafted certificate.

Frequently asked questions

What is CVE-2013-2100?: The urlopen function in pym/portage/util/_urlopen.py in Gentoo Portage 2.1.12, when using HTTPS, does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and modify binary package lists via a crafted certificate.
How severe is CVE-2013-2100?: CVE-2013-2100 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-2100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-2100?: CVE-2013-2100 affects Gentoo Portage. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-2100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-2100 published?: CVE-2013-2100 was published on 2014-09-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:gentoo:portage:2.1.12:*:*:*:*:*:*:*

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