Vulnerability record · CVE-2010-4478 · published 6 December 2010

CVE-2010-4478: Openbsd openssh improper authentication vulnerability

Openbsd · Openssh

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.

9.8 CVSS 3.1 Critical EPSS 4.2% · top 9.3% CWE-287 · Improper authentication

9.8CVSS 3.1 base score, v2 7.5

4.2%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

14References, 2 tagged exploit

16 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Openssh Openbsd

References

Link	Tags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
http://seb.dbzteam.org/crypto/jpake-session-key-retrieval.pdf	Exploit
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c#rev1.5	Patch
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c.diff?r1=1.4%3Br2=1.5%3Bf=h
https://bugzilla.redhat.com/show_bug.cgi?id=659297	Patch
https://github.com/seb-m/jpake
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12338
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
http://seb.dbzteam.org/crypto/jpake-session-key-retrieval.pdf	Exploit
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c#rev1.5	Patch
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c.diff?r1=1.4%3Br2=1.5%3Bf=h
https://bugzilla.redhat.com/show_bug.cgi?id=659297	Patch
https://github.com/seb-m/jpake
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12338

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2010-4478), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.