How severe is CVE-2003-1307?

CVE-2003-1307 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2003-1307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-1307?

CVE-2003-1307 primarily affects Apache Http Server. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-1307?

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

When was CVE-2003-1307 published?

CVE-2003-1307 was published on 2003-12-31 and last updated on 2026-06-16.

CVE-2003-1307

CVE-2003-1307 is a medium-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apache Http Server
Published: 2003-12-31
Last modified: 2026-06-16

Description

The mod_php module for the Apache HTTP Server allows local users with write access to PHP scripts to send signals to the server's process group and use the server's file descriptors, as demonstrated by sending a STOP signal, then intercepting incoming connections on the server's TCP port. NOTE: the PHP developer has disputed this vulnerability, saying "The opened file descriptors are opened by Apache. It is the job of Apache to protect them ... Not a bug in PHP.

Frequently asked questions

What is CVE-2003-1307?: The mod_php module for the Apache HTTP Server allows local users with write access to PHP scripts to send signals to the server's process group and use the server's file descriptors, as demonstrated by sending a STOP signal, then intercepting incoming connections on the server's TCP port. NOTE: the PHP developer has disputed this vulnerability, saying "The opened file descriptors are opened by Apache. It is the job of Apache to protect them ... Not a bug in PHP.
How severe is CVE-2003-1307?: CVE-2003-1307 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2003-1307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-1307?: CVE-2003-1307 primarily affects Apache Http Server. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-1307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1307 published?: CVE-2003-1307 was published on 2003-12-31 and last updated on 2026-06-16.

References

Affected products (23)

cpe:2.3:a:apache:http_server:2.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.28:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.28:beta:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.28:beta:win32:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.32:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.32:beta:win32:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.34:beta:win32:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.35:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.36:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.37:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.38:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.41:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.42:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.43:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.44:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.45:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.46:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.46:*:win32:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.47:*:*:*:*:*:*:*
cpe:2.3:a:apache:http_server:2.0.48:*:*:*:*:*:*:*

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