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Vulnerabilities

Vulnerability · CVE-2020-14422

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a…

Published Jun 18, 2020 · catalog updated Oct 14, 2026 · the affected product

Check this week

CVE-2020-14422 is not in CISA KEV. FIRST estimates a 12.71% chance of exploitation in the next 30 days. Check whether you run the affected product.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
12.71%
Remediation
Advisory link
Affected products
cpe fedoraproject/fedora · cpe opensuse/leap · cpe oracle/enterprise manager ops center · cpe python/python

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/fedora31
  • cpe fedoraproject/fedora32
  • cpe opensuse/leap15.1
  • cpe opensuse/leap15.2
  • cpe oracle/enterprise manager ops center12.4.0.0
  • cpe python/pythonversion unspecified

How to fix CVE-2020-14422

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-14422 is not in CISA KEV. FIRST estimates a 12.71% chance of exploitation in the next 30 days. Check whether you run the affected product.

Which versions are affected?

Compare what you have installed with oracle/enterprise manager ops center 12.4.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-330: Insufficiently Random Values; CWE-682. EPSS 12.71%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 18, 2020 · NIST NVD

    Detected

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5

  2. Oct 14, 2026 · NIST NVD

    Updated

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5

Sources

  • CVE.orgVulnerability recordCVE-2020-14422

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-14422

    30-day exploitation probability 12.7%

    first.org
  • NIST NVDVulnerability recordCVE-2020-14422

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or I

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.