CVE-2026-59842 | A flaw was found in libssh. During server-side GSSAPI key ex… | CVSS 3.7 LOW

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.

Metadata

CVE ID: CVE-2026-59842
State: PUBLISHED
Assigner: redhat
Reserved: 2026-07-07 15:40 UTC
Published: 2026-07-21 11:08 UTC
Last updated: 2026-07-21 11:08 UTC
Primary CWE: CWE-125
Out-of-bounds Read
Vendor / Product: Red Hat / Red Hat Enterprise Linux 10
Sources: cve.org · NVD

Severity & Metrics

3.7 LOW CVSS 3.1

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

Affected products (4)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Enterprise Linux 10	—	—
Red Hat	Red Hat Enterprise Linux 8	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—
Red Hat	Red Hat Hardened Images	—	—

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	Out-of-bounds Read

CVSS scores (1)

Score	Severity	Version	Source	Vector
3.7	LOW	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References (2)