Is CVE-2015-3218 in the CISA KEV catalog?

No. CVE-2015-3218 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-3218?

CVE-2015-3218 has a CVSS v2 base score of 2.1 (LOW).

What is the EPSS score for CVE-2015-3218?

CVE-2015-3218 has an EPSS score of 0.41% (33th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-3218?

Upgrade policykit-1 on debian 11 to 0.105-11 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2015-3218

LOW

2.1

CVSS v2

NVD

Description

The authentication_agent_new function in polkitbackend/polkitbackendinteractiveauthority.c in PolicyKit (aka polkit) before 0.113 allows local users to cause a denial of service (NULL pointer dereference and polkitd daemon crash) by calling RegisterAuthenticationAgent with an invalid object path.

How to fix

Remediation Available

policykit-1Debian

Fixed in:0.105-11CVE-2015-3218

libpolkit-backend-1-0Ubuntu

Fixed in:0.105-4ubuntu3.14.04.2USN-3717-1

Fixed in:0.105-14.1ubuntu0.1USN-3717-1

Fixed in:0.105-20ubuntu0.18.04.1USN-3717-1

policykit-1Ubuntu

Fixed in:0.105-4ubuntu3.14.04.2USN-3717-1

Fixed in:0.105-14.1ubuntu0.1USN-3717-1

Fixed in:0.105-20ubuntu0.18.04.1USN-3717-1

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

0.41%probability of exploitation in 30 days

33rdpercentile

Low risk: more likely to be exploited than 33% of all known CVEs.

References

Other references10

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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.