CVE-2021-29662

Name: CVE-2021-29662
Creator: NVD / NIST
Published: 2021-03-31T18:15:16.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.19%

Last modified Jun 17, 2026

CVE-2021-29662 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The Data::Validate::IP module through 0.29 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.. EPSS estimates a 2.19% chance of exploitation in the next 30 days.

Description

The Data::Validate::IP module through 0.29 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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.19%

80.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-704

Affected Software

Vendor	Product	Versions	Update
Data\	\	<= 0.29	\
Netapp	Snapcenter	All versions	—

References

https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/Exploit, Third Party Advisory
https://github.com/houseabsolute/Data-Validate-IPProduct, Third Party Advisory
https://github.com/houseabsolute/Data-Validate-IP/commit/3bba13c819d616514a75e089badd75002fd4f14ePatch, Third Party Advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-018.mdExploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210604-0002/Third Party Advisory
https://sick.codes/sick-2021-018/Exploit, Third Party Advisory
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/Exploit, Third Party Advisory
https://github.com/houseabsolute/Data-Validate-IPProduct, Third Party Advisory
https://github.com/houseabsolute/Data-Validate-IP/commit/3bba13c819d616514a75e089badd75002fd4f14ePatch, Third Party Advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-018.mdExploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210604-0002/Third Party Advisory
https://sick.codes/sick-2021-018/Exploit, Third Party Advisory

Timeline

Published: Mar 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29662?

How severe is CVE-2021-29662?

CVE-2021-29662 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29662?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29662?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST