High severity · published Jun 17, 2024
CVE-2024-4032
Incorrect IPv4 and IPv6 private ranges
7.5
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
CPython · Python Software Foundation
before 3.8.20; 3.9.0 before 3.9.20; 3.10.0 before 3.10.15; 3.11.0 before 3.11.10; 3.12.0 before 3.12.4; 3.13.0a1 before 3.13.0a6 · source: vendor, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4032
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4032
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/06/17/3
github.com
https://github.com/python/cpython/commit/22adf29da8d99933ffed8647d3e0726edd16f7f8
github.com
https://github.com/python/cpython/commit/40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69f
github.com
https://github.com/python/cpython/commit/895f7e2ac23eff4743143beef0f0c5ac71ea27d3
github.com
https://github.com/python/cpython/commit/ba431579efdcbaed7a96f2ac4ea0775879a332fb
github.com
https://github.com/python/cpython/commit/c62c9e518b784fe44432a3f4fc265fb95b651906
More from CPython
9.4
CVE-2026-115557
Distrust compromised intermediate certificates in ssl module
9.4
CVE-2025-4517
Arbitrary writes via tarfile realpath overflow
9.2
CVE-2026-19445
Use-after-free of a server-side SSLContext when sni_callback switches contexts
8.8
CVE-2026-3298
Out-of-bounds write in Windows asyncio.ProacterEventLoop.sock_recvfrom_into() when using nbytes
8.7
CVE-2024-8088
Infinite loop when iterating over zip archive entry names from zipfile.Path
