Is CVE-2021-40085 in the CISA KEV catalog?

No. CVE-2021-40085 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40085?

CVE-2021-40085 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-40085?

CVE-2021-40085 has an EPSS score of 1.89% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40085?

Upgrade neutron on debian 11 to 2:17.2.1-0+deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40085

MEDIUMEPSS 77th pctl

6.5

CVSS v3

NVD

Description

An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.

How to fix

Remediation Available

neutronDebian

Fixed in:2:17.2.1-0+deb11u1CVE-2021-40085

Fixed in:2:18.1.0-3CVE-2021-40085

neutronUbuntu

Fixed in:2:12.1.1-0ubuntu8.1USN-6067-1

Fixed in:2:16.4.2-0ubuntu6.2USN-6067-1

Fixed in:2:20.3.0-0ubuntu1.1USN-6067-1

python-neutronUbuntu

Fixed in:2:12.1.1-0ubuntu8.1USN-6067-1

python3-neutronUbuntu

Fixed in:2:16.4.2-0ubuntu6.2USN-6067-1

Fixed in:2:20.3.0-0ubuntu1.1USN-6067-1

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

1.89%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch2

Exploit1

launchpad.net

Third-Party Advisory3

Embed a live status badge for CVE-2021-40085

Markdown

[![CVE-2021-40085](https://tridentstack.com/cve/badge/CVE-2021-40085.svg)](https://tridentstack.com/cve/CVE-2021-40085)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-40085"><img src="https://tridentstack.com/cve/badge/CVE-2021-40085.svg" alt="CVE-2021-40085"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2024-11-21.