How severe is CVE-2013-7176?

CVE-2013-7176 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-7176 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-7176?

CVE-2013-7176 primarily affects Fail2ban. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-7176?

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

When was CVE-2013-7176 published?

CVE-2013-7176 was published on 2014-02-01 and last updated on 2026-06-17.

CVE-2013-7176

CVE-2013-7176 is a medium-severity vulnerability in Fail2ban 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Fail2ban
Published: 2014-02-01
Last modified: 2026-06-17

Description

config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.

Frequently asked questions

What is CVE-2013-7176?: config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.
How severe is CVE-2013-7176?: CVE-2013-7176 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-7176 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-7176?: CVE-2013-7176 primarily affects Fail2ban. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-7176?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-7176 published?: CVE-2013-7176 was published on 2014-02-01 and last updated on 2026-06-17.

References

Affected products (37)

cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.4:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.5:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.4:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.5:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.6:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.7:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.8:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.9:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.4:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.5:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.6:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.7:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.7.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.8:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.9:*:*:*:*:*:*:*

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