How severe is CVE-2010-1167?

CVE-2010-1167 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-1167 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-2010-1167?

CVE-2010-1167 primarily affects Fetchmail. In total, 112 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1167?

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

When was CVE-2010-1167 published?

CVE-2010-1167 was published on 2010-05-07 and last updated on 2026-06-16.

CVE-2010-1167

CVE-2010-1167 is a medium-severity vulnerability in Fetchmail with a CVSS 2.0 base score of 4.3. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Fetchmail
Published: 2010-05-07
Last modified: 2026-06-16

Description

fetchmail 4.6.3 through 6.3.16, when debug mode is enabled, does not properly handle invalid characters in a multi-character locale, which allows remote attackers to cause a denial of service (memory consumption and application crash) via a crafted (1) message header or (2) POP3 UIDL list.

Frequently asked questions

What is CVE-2010-1167?: fetchmail 4.6.3 through 6.3.16, when debug mode is enabled, does not properly handle invalid characters in a multi-character locale, which allows remote attackers to cause a denial of service (memory consumption and application crash) via a crafted (1) message header or (2) POP3 UIDL list.
How severe is CVE-2010-1167?: CVE-2010-1167 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-1167 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-2010-1167?: CVE-2010-1167 primarily affects Fetchmail. In total, 112 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1167?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1167 published?: CVE-2010-1167 was published on 2010-05-07 and last updated on 2026-06-16.

References

Affected products (112)

cpe:2.3:a:fetchmail:fetchmail:*:rc2:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.2.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.3.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.3.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.4.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:5.4.4:*:*:*:*:*:*:*

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