6.5

CVE-2021-40085: debian debian_linux

Modified
AliasesGHSA-fh73-gjvg-349cPYSEC-2021-361RHSA-2021:3481
Published 31-08-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-40085 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 1.83% chance of exploitation in the next 30 days, higher than 78.8% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.83%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
SUSE-SU-2022:1729-1SUSE-SU-2022:1884-1USN-6067-1

Timeline

  1. 31-08-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 5 sources · 3 versions

EPSS trend

Probability

1.83%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.83% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat12 products
  • openstack-neutron< 1:15.2.1-1.20210409073447.el8ost | < 1:15.3.5-2.20210608154813.el8ost.3 | < 1:9.4.1-56.el7ost | < 1:12.1.1-42.1.el7ost
  • openstack-neutron-common< 1:15.2.1-1.20210409073447.el8ost | < 1:15.3.5-2.20210608154813.el8ost.3 | < 1:9.4.1-56.el7ost | < 1:12.1.1-42.1.el7ost
  • openstack-neutron-linuxbridge< 1:15.2.1-1.20210409073447.el8ost | < 1:15.3.5-2.20210608154813.el8ost.3 | < 1:9.4.1-56.el7ost | < 1:12.1.1-42.1.el7ost
  • openstack-neutron-macvtap-agent< 1:15.2.1-1.20210409073447.el8ost | < 1:15.3.5-2.20210608154813.el8ost.3 | < 1:9.4.1-56.el7ost | < 1:12.1.1-42.1.el7ost
  • openstack-neutron-metering-agent< 1:15.2.1-1.20210409073447.el8ost | < 1:15.3.5-2.20210608154813.el8ost.3 | < 1:9.4.1-56.el7ost | < 1:12.1.1-42.1.el7ost
Debian2 products
  • neutron< 2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1 | < 2:17.2.1-0+deb11u1 | < 2:9.1.1-3+deb9u3 | < 2:18.1.0-3
  • debian_linuxEOL9.0 | 10.0 | 11.0
Openstack1 product
  • neutron< 16.4.1 | ≥ 17.0.0, < 17.2.1 | ≥ 18.0.0, < 18.1.1
PyPI1 product
  • neutron< 16.4.1 | ≥ 17.0.0, < 17.2.1 | ≥ 18.0.0, < 18.1.1
Ubuntu1 product
  • neutronAll versions (No fix recorded) | < 2:12.1.1-0ubuntu8.1 | < 2:16.4.2-0ubuntu6.2

5 vendors · 17 products

References

31 links
Show all 31 references