How severe is CVE-2006-0042?

CVE-2006-0042 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-0042 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0042?

CVE-2006-0042 primarily affects Apache Libapreq2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-0042?

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

When was CVE-2006-0042 published?

CVE-2006-0042 was published on 2006-02-18 and last updated on 2026-06-16.

CVE-2006-0042

CVE-2006-0042 is a medium-severity vulnerability in Apache Libapreq2 with a CVSS 2.0 base score of 5.0. 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 5.0)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apache Libapreq2
Published: 2006-02-18
Last modified: 2026-06-16

Description

Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.

Frequently asked questions

What is CVE-2006-0042?: Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.
How severe is CVE-2006-0042?: CVE-2006-0042 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0042 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0042?: CVE-2006-0042 primarily affects Apache Libapreq2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0042?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0042 published?: CVE-2006-0042 was published on 2006-02-18 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:apache:libapreq2:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:3.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*

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