Is CVE-2025-40911 in the CISA KEV catalog?

No. CVE-2025-40911 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-40911?

CVE-2025-40911 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-40911?

CVE-2025-40911 has an EPSS score of 0.31% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-40911?

Upgrade libnet-cidr-set-perl on debian 13 to 0.15-1 or later.

CVE & CISA-KEV Catalog

CVE-2025-40911

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-1287Improper Validation of Specified Type of Input

How to fix

Remediation Available

libnet-cidr-set-perlDebian

Fixed in:0.15-1CVE-2025-40911

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploit Intelligence

0.31%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-28.