CVE-2004-0399

CVE-2004-0399 is a high-severity vulnerability in University Of Cambridge Exim with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Stack-based buffer overflow in Exim 3.35, and other versions before 4, when the sender_verify option is true, allows remote attackers to cause a denial of service and possibly execute arbitrary code during sender verification.

Frequently asked questions

What is CVE-2004-0399?
Stack-based buffer overflow in Exim 3.35, and other versions before 4, when the sender_verify option is true, allows remote attackers to cause a denial of service and possibly execute arbitrary code during sender verification.
How severe is CVE-2004-0399?
CVE-2004-0399 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0399 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0399?
CVE-2004-0399 primarily affects University Of Cambridge Exim. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0399?
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-2004-0399 published?
CVE-2004-0399 was published on 2004-07-07 and last updated on 2026-06-16.

References

Affected products (2)

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