CVE-2024-4032

CVE-2024-4032 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-697.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• EPSS exploit prediction: 1% (60th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2024-32597
• Weakness: CWE-697
• Published: 2024-06-17
• Last modified: 2026-06-17

Description

The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the is_private and is_global properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries. CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.

Frequently asked questions

What is CVE-2024-4032?

The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the is_private and is_global properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries. CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.

How severe is CVE-2024-4032?

CVE-2024-4032 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-4032 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-4032?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-4032 have an EU (EUVD) identifier?

Yes. CVE-2024-4032 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32597.

When was CVE-2024-4032 published?

CVE-2024-4032 was published on 2024-06-17 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2024/06/17/3
• https://github.com/python/cpython/commit/22adf29da8d99933ffed8647d3e0726edd16f7f8
• https://github.com/python/cpython/commit/40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69f
• https://github.com/python/cpython/commit/895f7e2ac23eff4743143beef0f0c5ac71ea27d3
• https://github.com/python/cpython/commit/ba431579efdcbaed7a96f2ac4ea0775879a332fb
• https://github.com/python/cpython/commit/c62c9e518b784fe44432a3f4fc265fb95b651906
• https://github.com/python/cpython/commit/f86b17ac511e68192ba71f27e752321a3252cee3
• https://github.com/python/cpython/issues/113171
• https://github.com/python/cpython/pull/113179
• https://mail.python.org/archives/list/[email protected]/thread/NRUHDUS2IV2USIZM2CVMSFL6SCKU3RZA/
• https://security.netapp.com/advisory/ntap-20240726-0004/
• https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
• https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml
• https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html

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