How severe is CVE-2004-1765?

CVE-2004-1765 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-1765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1765?

CVE-2004-1765 affects Mod Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-1765?

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-2004-1765 published?

CVE-2004-1765 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-1765

CVE-2004-1765 is a high-severity vulnerability in Mod Security 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: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mod Security
Published: 2004-12-31
Last modified: 2026-06-16

Description

Off-by-one buffer overflow in ModSecurity (mod_security) 1.7.4 for Apache 2.x, when SecFilterScanPost is enabled, allows remote attackers to execute arbitrary code via crafted POST requests.

Frequently asked questions

What is CVE-2004-1765?: Off-by-one buffer overflow in ModSecurity (mod_security) 1.7.4 for Apache 2.x, when SecFilterScanPost is enabled, allows remote attackers to execute arbitrary code via crafted POST requests.
How severe is CVE-2004-1765?: CVE-2004-1765 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-1765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1765?: CVE-2004-1765 affects Mod Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-1765?: 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-2004-1765 published?: CVE-2004-1765 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mod_security:mod_security:1.7.4:*:*:*:*:*:*:*

More vulnerabilities in Mod Security

CVE-2003-1171 — High (CVSS 7.5): Heap-based buffer overflow in the sec_filter_out function in mod_security 1.7RC1 through 1.7.1 in Apache 2 allows…
CVE-2007-1359 — Medium (CVSS 6.8): Interpretation conflict in ModSecurity (mod_security) 2.1.0 and earlier allows remote attackers to bypass request rules…

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