CVE-2013-20001

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-02-12 · updated 2026-06-16

Description

An issue was discovered in OpenZFS through 2.0.3. When an NFS share is exported to IPv6 addresses via the sharenfs feature, there is a silent failure to parse the IPv6 address data, and access is allowed to everyone. IPv6 restrictions from the configuration are not applied.

Affected products

OpenZFS: through 2.0.3

References

https://github.com/openzfs/zfs/issues/1894#issuecomment-30693652
https://github.com/openzfs/zfs/releases
https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
https://github.com/openzfs/zfs/issues/1894#issuecomment-30693652
https://github.com/openzfs/zfs/releases
https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
https://lists.debian.org/debian-lts-announce/2025/04/msg00009.html

Get alerted when CVE-2013-20001 or the next vulnerability affects your stack