CVE-2025-8277

ADVISORY - nist

Summary

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.

EPSS Score: 0.00052 (0.160)

Common Weakness Enumeration (CWE)

ADVISORY - nist

Missing Release of Memory after Effective Lifetime

ADVISORY - redhat

Missing Release of Memory after Effective Lifetime


NIST

CREATED

UPDATED

ADVISORY IDCVE-2025-8277
EXPLOITABILITY SCORE

1.6

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

3.1low

Debian

CREATED

UPDATED

ADVISORY IDCVE-2025-8277
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY

Ubuntu

CREATED

UPDATED

ADVISORY IDCVE-2025-8277
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Alow

Amazon

CREATED

UPDATED

EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Amedium

Red Hat

CREATED

UPDATED

ADVISORY IDCVE-2025-8277
EXPLOITABILITY SCORE

1.6

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

3.1low