CVE-2026-59842

Published: Jul 21, 2026Modified: Jul 22, 2026

3.7

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 2.2 / Impact: 1.4

Source: secalert@redhat.com (Secondary)

Description

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (2)

https://access.redhat.com/security/cve/CVE-2026-59842

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2498168

Source: secalert@redhat.com

Timeline

No history available yet.