CVE-2026-77185 Apache MINA SSHD - Authentication Bypass

Apache MINA SSHD 2.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 contain an authentication bypass caused by flawed asynchronous authentication logic in sshd-core, letting attackers skip signature checks in public-key or hostbased authentication, exploit requires server to use asynchronous authentication with these schemes.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-305

Vendor fix

Upgrade to Apache MINA SSHD 2.20.0 or 3.0.0-M6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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