CVE-2026-59850 | A flaw was found in libssh. If data packets are processed af… | CVSS 4.3 MEDIUM

Description

A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.

Metadata

CVE ID: CVE-2026-59850
State: PUBLISHED
Assigner: redhat
Reserved: 2026-07-07 15:40 UTC
Published: 2026-07-21 14:15 UTC
Last updated: 2026-07-21 15:36 UTC
Primary CWE: CWE-416
Use After Free
Vendor / Product: Red Hat / Red Hat Enterprise Linux 10
Sources: cve.org · NVD

Severity & Metrics

4.3 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

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-416	cna	Use After Free

CVSS scores (1)

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

References (2)