How severe is CVE-2003-0789?

CVE-2003-0789 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2003-0789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0789?

CVE-2003-0789 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-0789?

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

When was CVE-2003-0789 published?

CVE-2003-0789 was published on 2003-11-03 and last updated on 2026-06-16.

CVE-2003-0789

CVE-2003-0789 is a critical-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apache Http Server
Published: 2003-11-03
Last modified: 2026-06-16

Description

mod_cgid in Apache before 2.0.48, when using a threaded MPM, does not properly handle CGI redirect paths, which could cause Apache to send the output of a CGI program to the wrong client.

Frequently asked questions

What is CVE-2003-0789?: mod_cgid in Apache before 2.0.48, when using a threaded MPM, does not properly handle CGI redirect paths, which could cause Apache to send the output of a CGI program to the wrong client.
How severe is CVE-2003-0789?: CVE-2003-0789 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2003-0789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0789?: CVE-2003-0789 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0789?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2003-0789 published?: CVE-2003-0789 was published on 2003-11-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

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