How severe is CVE-2016-1000104?

CVE-2016-1000104 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-1000104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1000104?

CVE-2016-1000104 primarily affects Apache Mod Fcgid. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1000104?

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-2016-1000104 published?

CVE-2016-1000104 was published on 2019-12-03 and last updated on 2026-06-17.

CVE-2016-1000104

CVE-2016-1000104 is a high-severity vulnerability in Apache Mod Fcgid with a CVSS 3.x base score of 8.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apache Mod Fcgid
Published: 2019-12-03
Last modified: 2026-06-17

Description

A security Bypass vulnerability exists in the FcgidPassHeader Proxy in mod_fcgid through 2016-07-07.

Frequently asked questions

What is CVE-2016-1000104?: A security Bypass vulnerability exists in the FcgidPassHeader Proxy in mod_fcgid through 2016-07-07.
How severe is CVE-2016-1000104?: CVE-2016-1000104 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-1000104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1000104?: CVE-2016-1000104 primarily affects Apache Mod Fcgid. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1000104?: 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-2016-1000104 published?: CVE-2016-1000104 was published on 2019-12-03 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:apache:mod_fcgid:*:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

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