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CVE-2025-40911: Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly consider leading zero characters in IP CIDR address strings, which could allow...
Description
Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly handle leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses.
Leading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation.
Net::CIDR::Set used code from Net::CIDR::Lite, which had a similar vulnerability CVE-2021-47154.
Classification
CVE ID: CVE-2025-40911
Problem Types
CWE-1287 Improper Validation of Specified Type of InputAffected Products
Vendor: RRWO
Product: Net::CIDR::Set
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 14.66% (scored less or equal to compared to others)
EPSS Date: 2025-06-18 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-40911https://metacpan.org/release/RRWO/Net-CIDR-Set-0.14/changes
https://github.com/robrwo/perl-Net-CIDR-Set/commit/be7d91e8446ad8013b08b4be313d666dab003a8a.patch
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/