CVE-2013-20001
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.08% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- openzfs/openzfs
- Source
- cve@mitre.org
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/openzfs/zfs/issues/1894#issuecomment-30693652Exploit, Third Party Advisory
- https://github.com/openzfs/zfs/releasesRelease Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
- https://github.com/openzfs/zfs/issues/1894#issuecomment-30693652Exploit, Third Party Advisory
- https://github.com/openzfs/zfs/releasesRelease Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
- https://lists.debian.org/debian-lts-announce/2025/04/msg00009.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.