How severe is CVE-2016-4464?

CVE-2016-4464 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-4464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4464?

CVE-2016-4464 primarily affects Apache Cxf Fediz. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4464?

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-2016-4464 published?

CVE-2016-4464 was published on 2016-09-21 and last updated on 2026-06-17.

CVE-2016-4464

CVE-2016-4464 is a critical-severity vulnerability in Apache Cxf Fediz with a CVSS 3.x base score of 9.8. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Apache Cxf Fediz
Published: 2016-09-21
Last modified: 2026-06-17

Description

The application plugins in Apache CXF Fediz 1.2.x before 1.2.3 and 1.3.x before 1.3.1 do not match SAML AudienceRestriction values against configured audience URIs, which might allow remote attackers to have bypass intended restrictions and have unspecified other impact via a crafted SAML token with a trusted signature.

Frequently asked questions

What is CVE-2016-4464?: The application plugins in Apache CXF Fediz 1.2.x before 1.2.3 and 1.3.x before 1.3.1 do not match SAML AudienceRestriction values against configured audience URIs, which might allow remote attackers to have bypass intended restrictions and have unspecified other impact via a crafted SAML token with a trusted signature.
How severe is CVE-2016-4464?: CVE-2016-4464 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-4464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4464?: CVE-2016-4464 primarily affects Apache Cxf Fediz. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4464?: 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-2016-4464 published?: CVE-2016-4464 was published on 2016-09-21 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:apache:cxf_fediz:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:cxf_fediz:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:cxf_fediz:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:cxf_fediz:1.3.0:*:*:*:*:*:*:*

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