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CVE-2010-4478

33
FAUCET Score

CVE-2010-4478 describes a critical vulnerability in OpenSSH versions 5.6 and earlier, specifically when the J-PAKE authentication protocol is enabled. Attackers can bypass the shared secret authentication by manipulating public parameters during the J-PAKE protocol, leading to unauthorized access. This vulnerability carries a CVSS score of 7.5, indicating a high severity with a network-based attack vector, low attack complexity, and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.6CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:1.2:*:*:*:*:*:*:*
1.2.1CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:1.2.1:*:*:*:*:*:*:*
1.2.2CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:1.2.2:*:*:*:*:*:*:*
1.2.3CPE matchmatch criteria
cpe:2.3:a:openbsd:openssh:1.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.24%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0424 is in the 83rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2010-4478Important

openssh: J-PAKE authentication bypass

Sep 20, 2010

References

kb.juniper.net / InfoCenter/index
bugzilla.redhat.com / show_bug.cgi
Patch
seb.dbzteam.org / crypto/jpake-session-key-retrieval.pdf
Exploit
github.com / seb-m/jpake
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12338
openbsd.org / cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c.diff
openbsd.org / cgi-bin/cvsweb/src/usr.bin/ssh/jpake.c
Patch