CVE-2021-29662: The Data::Validate::IP module through 0.29 for Perl does not properly consider extraneous zero characters at t

Q: How do I fix CVE-2021-29662?

\: upgrade to newer than 0.29; snapcenter: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2021-29662 being exploited?

CVE-2021-29662 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-29662 affect?

CVE-2021-29662 affects \, snapcenter. Severity is high (CVSS 7.5). 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 add

Q: How urgent is CVE-2021-29662?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADEMITIGATE

CVE-2021-29662 is a high-severity flaw (CVSS 7.5) affecting \, snapcenter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-704
Published	2021-03-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: data\ · netapp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-03-31 18:15 UTCPublished CVE record published
2026-06-17 03:48 UTCUpdated Record last modified

data\ \ UPGRADE

Affected: <= 0.29

Fixed in: newer than 0.29

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy || rpm -q || --version

2. UPGRADE to newer than 0.29 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

netapp snapcenter MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy snapcenter || rpm -q snapcenter || snapcenter --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-29662?

\: upgrade to newer than 0.29; snapcenter: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-29662 being exploited?

CVE-2021-29662 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-29662 affect?

CVE-2021-29662 affects \, snapcenter. Severity is high (CVSS 7.5). 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 add

How urgent is CVE-2021-29662?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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