How severe is CVE-2001-0101?

CVE-2001-0101 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2001-0101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0101?

CVE-2001-0101 primarily affects Fetchmail. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-0101?

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-2001-0101 published?

CVE-2001-0101 was published on 2001-02-12 and last updated on 2026-06-16.

CVE-2001-0101

CVE-2001-0101 is a critical-severity vulnerability in Fetchmail with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Fetchmail
Published: 2001-02-12
Last modified: 2026-06-16

Description

Vulnerability in fetchmail 5.5.0-2 and earlier in the AUTHENTICATE GSSAPI command.

Frequently asked questions

What is CVE-2001-0101?: Vulnerability in fetchmail 5.5.0-2 and earlier in the AUTHENTICATE GSSAPI command.
How severe is CVE-2001-0101?: CVE-2001-0101 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2001-0101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0101?: CVE-2001-0101 primarily affects Fetchmail. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0101?: 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-2001-0101 published?: CVE-2001-0101 was published on 2001-02-12 and last updated on 2026-06-16.

References

Affected products (52)

cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.5:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.6:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.5:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.6:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.9:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.5:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.6:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.7.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.1.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.1:*:*:*:*:*:*:*

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