CVE-2026-53689

EUVD-2026-36027
libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Debian logo
Debian Releases
Debian Product
Codename
libnfs
bookworm
vulnerable
bookworm (security)
4.0.0-1+deb12u1
fixed
bullseye
vulnerable
bullseye (security)
4.0.0-1+deb11u1
fixed
forky
5.0.2-1.1
fixed
sid
5.0.2-1.1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libnfs
bionic
needs-triage
focal
needs-triage
jammy
Fixed 4.0.0-1ubuntu0.1
released
noble
Fixed 5.0.2-1ubuntu0.24.04.1
released
questing
Fixed 5.0.2-1ubuntu0.25.10.1
released
resolute
Fixed 5.0.2-1ubuntu1.1
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libnfs-devel
suse enterprise sap 15 SP4
1.11.0-150000.3.3.1
fixed
suse enterprise sap 15 SP5
1.11.0-150000.3.3.1
fixed
suse enterprise sap 15 SP6
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP4
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP5
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP6
1.11.0-150000.3.3.1
fixed
libnfs8
suse enterprise sap 15 SP4
1.11.0-150000.3.3.1
fixed
suse enterprise sap 15 SP5
1.11.0-150000.3.3.1
fixed
suse enterprise sap 15 SP6
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP4
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP5
1.11.0-150000.3.3.1
fixed
suse enterprise server 15 SP6
1.11.0-150000.3.3.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libnfs
Amazon Linux 2
0:1.11.0-1.amzn2.0.2
fixed
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
libnfs-debuginfo
Amazon Linux 2
0:1.11.0-1.amzn2.0.2
fixed
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
libnfs-debugsource
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
libnfs-devel
Amazon Linux 2
0:1.11.0-1.amzn2.0.2
fixed
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
libnfs-utils
Amazon Linux 2
0:1.11.0-1.amzn2.0.2
fixed
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
libnfs-utils-debuginfo
Amazon Linux 2023
0:4.0.0-4.amzn2023.0.3
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
libnfs
Azure Linux 3.0
0:5.0.2-2.azl3
fixed
Common Weakness Enumeration
References
https://github.com/sahlberg/libnfs/commit/55c18ea33a83d667f79f0ef209c96895795c729f
https://lists.debian.org/debian-lts-announce/2026/07/msg00031.html