OpenSSH 5.6 and earlier, when J-PAKE is enabled, does not properly validate the public parameters in the J-PAKE protocol, which allows remote attackers to bypass the need for knowledge of the shared secret, and successfully authenticate, by sending crafted values in each round of the protocol, a related issue to CVE-2010-4252.
Severity
Critical 9.8
Published
6 Dec 2010
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
4.4% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 12 Nov 2026