CVE-2006-4925: OpenBSD OpenSSH

Medium severity, CVSS 5.0. EPSS: 15.2% chance of exploitation in the next 30 days.

packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.

Affected products

• OpenBSD OpenSSH: version 4.5 only

Published 2006-09-29. Last modified 2026-06-16.