Is CVE-2015-1856 in the CISA KEV catalog?

No. CVE-2015-1856 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-1856?

CVE-2015-1856 has a CVSS v2 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2015-1856?

CVE-2015-1856 has an EPSS score of 3.95% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-1856?

Upgrade swift on debian 11 to 2.2.0-2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-1856

MEDIUMEPSS 89th pctl

5.5

CVSS v2

NVD

Description

OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

swiftDebian

Fixed in:2.2.0-2CVE-2015-1856

swiftUbuntu

Fixed in:1.13.1-0ubuntu1.2USN-2704-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.95%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory2

Other references7

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.