6.5Medium
CVE-2025-40910
Net::IP::LPM version 1.10 for Perl does not properly consider 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.
What this means for your business
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.3% chance of attack attempts being seen in the next 30 days, ranking above 24% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness
- CWE-1287
- Assigned by
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
Dates
- Published
- 2025-06-27
- Last modified
- 2026-09-07
- Sources
- NVD
References
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
- https://metacpan.org/release/RRWO/Net-IP-LPM-1.11/changes
- https://metacpan.org/release/TPODER/Net-IP-LPM-1.10/diff/TPODER/Net-IP-LPM-1.09/lib/Net/IP/LPM.pm
- https://rt.cpan.org/Ticket/Display.html?id=179855
- https://security.metacpan.org/patches/N/Net-IP-LPM/1.10/CVE-2025-40910-r1.patch