How severe is CVE-2005-1523?

CVE-2005-1523 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-1523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-1523?

CVE-2005-1523 primarily affects Gnu Mailutils. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-1523?

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

When was CVE-2005-1523 published?

CVE-2005-1523 was published on 2005-05-26 and last updated on 2026-06-16.

CVE-2005-1523

CVE-2005-1523 is a high-severity vulnerability in Gnu Mailutils with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnu Mailutils
Published: 2005-05-26
Last modified: 2026-06-16

Description

Format string vulnerability in imap4d server in GNU Mailutils 0.5 and 0.6, and other versions before 0.6.90, allows remote attackers to execute arbitrary code via format string specifiers in the command tag for IMAP commands.

Frequently asked questions

What is CVE-2005-1523?: Format string vulnerability in imap4d server in GNU Mailutils 0.5 and 0.6, and other versions before 0.6.90, allows remote attackers to execute arbitrary code via format string specifiers in the command tag for IMAP commands.
How severe is CVE-2005-1523?: CVE-2005-1523 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-1523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-1523?: CVE-2005-1523 primarily affects Gnu Mailutils. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-1523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-1523 published?: CVE-2005-1523 was published on 2005-05-26 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:gnu:mailutils:0.5:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailutils:0.6:*:*:*:*:*:*:*

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