CVE-2021-29424
CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The Net::Netmask module before 2.0000 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
Technical details
- Published
- 2021-04-06
Frequently asked questions
What is CVE-2021-29424?
The Net::Netmask module before 2.0000 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
Is CVE-2021-29424 actively exploited?
Active exploitation of CVE-2021-29424 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-29424?
CVE-2021-29424 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-29424 affecting your environment?
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