CVE-2025-40910
CVE-2025-40910 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-1287.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19330
- Weakness: CWE-1287
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-40910?
- CVE-2025-40910 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-40910 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-40910?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-40910 have an EU (EUVD) identifier?
- Yes. CVE-2025-40910 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19330.
- When was CVE-2025-40910 published?
- CVE-2025-40910 was published on 2025-06-27 and last updated on 2026-07-03.
References
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
- 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
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