How severe is CVE-2015-8466?

CVE-2015-8466 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2015-8466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8466?

CVE-2015-8466 primarily affects Openstack Swift3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-8466?

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-2015-8466 published?

CVE-2015-8466 was published on 2016-01-13 and last updated on 2026-06-17.

CVE-2015-8466

CVE-2015-8466 is a high-severity vulnerability in Openstack Swift3 with a CVSS 3.x base score of 7.4. 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 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Openstack Swift3
Published: 2016-01-13
Last modified: 2026-06-17

Description

Swift3 before 1.9 allows remote attackers to conduct replay attacks via an Authorization request that lacks a Date header.

Frequently asked questions

What is CVE-2015-8466?: Swift3 before 1.9 allows remote attackers to conduct replay attacks via an Authorization request that lacks a Date header.
How severe is CVE-2015-8466?: CVE-2015-8466 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2015-8466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-8466?: CVE-2015-8466 primarily affects Openstack Swift3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-8466?: 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-2015-8466 published?: CVE-2015-8466 was published on 2016-01-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
cpe:2.3:a:openstack:swift3:*:*:*:*:*:*:*:*

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