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CVE-2026-49940

28
FAUCET Score

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks. Unicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers. This could allow network masks to accept larger networks.

First published: Jun 4, 2026Last modified: Jun 4, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 0, <= 0.20CPE match
cpe:2.3:a:rrwo:net\:\:cidr\:\:set:*:*:*:*:*:perl:*:*
< 0.21CPE matchmatch criteria
cpe:2.3:a:rrwo:net\:\:cidr\:\:set:*:*:*:*:*:perl:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 2nd percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

metacpan.org / release/RRWO/Net-CIDR-Set-0.21/changes
Release Notes
nvd.nist.gov / vuln/detail/CVE-2025-40911
Third Party AdvisoryUS Government Resource