# CVE-2010-4478

## Summary

- **CVE ID:** CVE-2010-4478
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Dec 6, 2010
- **Last Modified:** May 28, 2026

## Description

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.

## Affected Products

- n/a — n/a (n/a)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.44%
- **EPSS Percentile:** 62.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._