PT-2026-61857 · Red Hat · Red Hat Enterprise Linux 10+3

CVE-2026-59842 · Published 2026-07-21 · Updated 2026-07-21

NVD

CVSS v3.1

3.7

Low

Base vector

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

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.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-59842

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Red Hat Hardened Images

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-59842 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2498168 · Note
• https://access.redhat.com/security/cve/CVE-2026-59842 · Note