CVE-2026-73282
published 2026-08-11CVE-2026-73282: 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.
PriorityP425medium4.8CVSS 3.1
AVNACHPRNUINSUCLILAN
EPSS
0.16%
5.8th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openbsd | openssh | < 10.5 | 10.5 |
| openbsd | openssh | — | — |
CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
vendor_redhat4.8MEDIUM
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Red Hat
openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
vendor_redhat·2026-08-11·CVSS 4.8
CVE-2026-73282 [MEDIUM] CWE-825 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
A flaw was found in OpenSSH. A use-after-free vulnerability exists in the `ssh` client when handling concurrent remote-forwarding operations. This can occur if a remote forwarding is added via the local session multiplexing socket while a remote forwarding open request is pending with the server. A remote attacker with high attack complexity could potentially exploit this to achieve low impact on confidentiality and integrity.
Statement: A use-after-free flaw exists in OpenSSH's ssh client during concurrent remote-forwarding processing. When adding a remote forward via the local session multiplexing socket while a server remote-forward open request is pending, realloc data management fails, free
GHSA
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.
ghsa_unreviewed·2026-08-11
CVE-2026-73282 [MEDIUM] CWE-416 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.
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client [fedora-all]
bugzilla·2026-08-17·CVSS 4.8
CVE-2026-73282 [MEDIUM] CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client [fedora-all]
CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
bugzilla·2026-08-11·CVSS 4.8
CVE-2026-73282 [MEDIUM] CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
CVE-2026-73282 openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client
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.
2026-08-11
Published