CVE-2025-40911

Published May 27, 2025

Last updated 2 months ago

CVSS medium 6.5

Overview

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.
Source
9b29abf9-4ab0-4765-b253-1875cd9b441e
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
6.5
Impact score
2.5
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

9b29abf9-4ab0-4765-b253-1875cd9b441e
CWE-1287

Social media

Hype score
Not currently trending

  1. CVE-2025-40911 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 … https://t.co/rLmAFNdIec

    @CVEnew

    27 May 2025

    482 Impressions

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References

Sources include official advisories and independent security research.