9.8

CVE-2010-4478: openbsd openssh Improper Authentication

CVSS: 9.8v3.1CriticalModified
Published 06-12-2010Last modified 28-05-2026
Open JSON

Vulnerability summary

CVE-2010-4478 is a critical (CVSS 9.8) Improper Authentication vulnerability in openbsd openssh. EPSS estimates a 4.24% chance of exploitation in the next 30 days, higher than 90.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
4.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 06-12-2010
    PublishedVulnerability first disclosed.
  2. 28-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

4.24%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

0.00 pp

From 4.24% on 21-09-2026

21-09-202621-10-2026
EPSS score
4.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (seb.dbzteam.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Openbsd1 product
  • openssh≤ 5.6 | 1.2 | 1.2.1 | 1.2.2 | 1.2.3 | 1.2.27 | 1.3 | 1.5 | 1.5.7 | 1.5.8 | 2.1 | 2.1.1 | 2.2 | 2.3 | 2.3.1 | 2.5 | 2.5.1 | 2.5.2 | 2.9 | 2.9.9 | 2.9.9p2 | 2.9p1 | 2.9p2 | 3.0 | 3.0.1 | 3.0.1p1 | 3.0.2 | 3.0.2p1 | 3.0p1 | 3.1 | 3.1p1 | 3.2 | 3.2.2 | 3.2.2p1 | 3.2.3p1 | 3.3 | 3.3p1 | 3.4 | 3.4p1 | 3.5 | 3.5p1 | 3.6 | 3.6.1 | 3.6.1p1 | 3.6.1p2 | 3.7 | 3.7.1 | 3.7.1p1 | 3.7.1p2 | 3.8 | 3.8.1 | 3.8.1p1 | 3.9 | 3.9.1 | 3.9.1p1 | 4.0 | 4.0p1 | 4.1 | 4.1p1 | 4.2 | 4.2p1 | 4.3 | 4.3p1 | 4.3p2 | 4.4 | 4.4p1 | 4.5 | 4.6 | 4.7 | 4.7p1 | 4.8 | 4.9 | 5.0 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5

1 vendor · 1 product

References

7 links