CVE-2026-73282

EUVD-2026-56891
In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 4.84%
Affected Products (NVD)
VendorProductVersion
openbsdopenssh
𝑥
< 10.5
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openssh
bookworm
postponed
bookworm (security)
vulnerable
forky
1:10.5p1-1
fixed
sid
1:10.5p1-1
fixed
trixie
no-dsa
trixie (security)
vulnerable
openssh-gssapi
forky
1:10.5p1-1
fixed
sid
1:10.5p1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openssh
bionic
Fixed 1:7.6p1-4ubuntu0.7+esm6
released
focal
Fixed 1:8.2p1-4ubuntu0.13+esm3
released
jammy
Fixed 1:8.9p1-3ubuntu0.17
released
noble
Fixed 1:9.6p1-3ubuntu13.19
released
resolute
Fixed 1:10.2p1-2ubuntu3.6
released
trusty
Fixed 1:6.6p1-2ubuntu2.13+esm4
released
xenial
Fixed 1:7.2p2-4ubuntu2.10+esm10
released
openssh-ssh1
bionic
ignored
focal
ignored
jammy
ignored
noble
ignored
resolute
ignored
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
openssh
RHEL 8
0:8.0p1-33.el8_10
fixed
RHEL 9
0:9.9p1-11.el9_8
fixed
openssh-askpass
RHEL 8
0:8.0p1-33.el8_10
fixed
RHEL 9
0:9.9p1-11.el9_8
fixed
openssh-cavs
RHEL 8
0:8.0p1-33.el8_10
fixed
openssh-clients
RHEL 8
0:8.0p1-33.el8_10
fixed
RHEL 9
0:9.9p1-11.el9_8
fixed
openssh-keycat
RHEL 8
0:8.0p1-33.el8_10
fixed
RHEL 9
0:9.9p1-11.el9_8
fixed
openssh-ldap
RHEL 8
0:8.0p1-33.el8_10
fixed
openssh-server
RHEL 8
0:8.0p1-33.el8_10
fixed
RHEL 9
0:9.9p1-11.el9_8
fixed
pam
RHEL 8
0:0.10.3-8.33.el8_10
fixed
RHEL 9
0:0.10.4-8.11.el9_8
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
openssh
Azure Linux 3.0
0:9.8p1-10.azl3
fixed
Common Weakness Enumeration
References
https://www.openssh.org/releasenotes.html#10.5