How severe is CVE-2003-0844?

CVE-2003-0844 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2003-0844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0844?

CVE-2003-0844 affects Schroepl Mod Gzip. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-0844?

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-2003-0844 published?

CVE-2003-0844 was published on 2003-11-17 and last updated on 2026-06-16.

CVE-2003-0844

CVE-2003-0844 is a high-severity vulnerability in Schroepl Mod Gzip with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 2.1
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Schroepl Mod Gzip
Published: 2003-11-17
Last modified: 2026-06-16

Description

mod_gzip 1.3.26.1a and earlier, and possibly later official versions, when running in debug mode without the Apache log, allows local users to overwrite arbitrary files via (1) a symlink attack on predictable temporary filenames on Unix systems, or (2) an NTFS hard link on Windows systems when the "Strengthen default permissions of internal system objects" policy is not enabled.

Frequently asked questions

What is CVE-2003-0844?: mod_gzip 1.3.26.1a and earlier, and possibly later official versions, when running in debug mode without the Apache log, allows local users to overwrite arbitrary files via (1) a symlink attack on predictable temporary filenames on Unix systems, or (2) an NTFS hard link on Windows systems when the "Strengthen default permissions of internal system objects" policy is not enabled.
How severe is CVE-2003-0844?: CVE-2003-0844 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2003-0844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0844?: CVE-2003-0844 affects Schroepl Mod Gzip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0844?: 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-2003-0844 published?: CVE-2003-0844 was published on 2003-11-17 and last updated on 2026-06-16.

References

http://marc.info/?l=bugtraq&m=105457180009860&w=2

Affected products (1)

cpe:2.3:a:schroepl:mod_gzip:*:*:*:*:*:*:*:*

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