CVE-2026-32746

EUVD-2026-12065
telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 97%
Affected Products (NVD)
VendorProductVersion
gnuinetutils
𝑥
≤ 2.7
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
inetutils
bookworm
2:2.4-2+deb12u3
fixed
bookworm (security)
2:2.4-2+deb12u3
fixed
bullseye
vulnerable
bullseye (security)
2:2.0-1+deb11u4
fixed
forky
2:2.8-2
fixed
sid
2:2.8-2
fixed
trixie
2:2.6-3+deb13u3
fixed
trixie (security)
2:2.6-3+deb13u3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
inetutils
bionic
Fixed 2:1.9.4-3ubuntu0.1+esm5
released
focal
Fixed 2:1.9.4-11ubuntu0.2+esm4
released
jammy
Fixed 2:2.2-2ubuntu0.2+esm1
released
noble
Fixed 2:2.5-3ubuntu4.2
released
questing
Fixed 2:2.6-1ubuntu3.2
released
resolute
Fixed 2:2.7-2ubuntu1.1
released
trusty
Fixed 2:1.9.2-1ubuntu0.1~esm4
released
xenial
ignored
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
krb5-appl-clients
suse enterprise server 12 SP3
1.0.3-3.12.1
fixed
suse enterprise server 12 SP5
1.0.3-3.12.1
fixed
krb5-appl-servers
suse enterprise server 12 SP3
1.0.3-3.12.1
fixed
suse enterprise server 12 SP5
1.0.3-3.12.1
fixed
Common Weakness Enumeration
References
https://lists.gnu.org/archive/html/bug-inetutils/2026-03/msg00031.html
https://www.openwall.com/lists/oss-security/2026/03/12/4
http://www.openwall.com/lists/oss-security/2026/03/14/1
https://github.com/watchtowrlabs/watchtowr-vs-telnetd-CVE-2026-32746