How severe is CVE-2013-4223?

CVE-2013-4223 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-4223 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4223?

CVE-2013-4223 affects Gentoo Nullmailer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-4223?

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

When was CVE-2013-4223 published?

CVE-2013-4223 was published on 2014-05-23 and last updated on 2026-06-16.

CVE-2013-4223

CVE-2013-4223 is a medium-severity vulnerability in Gentoo Nullmailer 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Gentoo Nullmailer
Published: 2014-05-23
Last modified: 2026-06-16

Description

The Gentoo Nullmailer package before 1.11-r2 uses world-readable permissions for /etc/nullmailer/remotes, which allows local users to obtain SMTP authentication credentials by reading the file.

Frequently asked questions

What is CVE-2013-4223?: The Gentoo Nullmailer package before 1.11-r2 uses world-readable permissions for /etc/nullmailer/remotes, which allows local users to obtain SMTP authentication credentials by reading the file.
How severe is CVE-2013-4223?: CVE-2013-4223 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-4223 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4223?: CVE-2013-4223 affects Gentoo Nullmailer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-4223?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4223 published?: CVE-2013-4223 was published on 2014-05-23 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:gentoo:nullmailer:1.11:*:*:*:*:*:*:*

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