CVE-2026-43798

Published: Aug 20, 2026Modified: Sep 3, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1.

Affected (1)

Products: Apple: Swiftnio Ssh

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Apple Swiftnio Ssh	Before 0.14.1

Related CWEs

Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

References (1)

https://github.com/apple/swift-nio-ssh/security/advisories/GHSA-998x-vgvp-xwpc

Source: product-security@apple.com

Vendor AdvisoryPatch

Timeline

No history available yet.