Skip to content
OpenAdvisories
Critical · 9.8 CVE-2026-43798 EUVD-2026-63655

A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and conte…

Published Aug 20, 2026 · Updated Aug 26, 2026 · Assigned by apple

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 products

VendorProductAffectedFixed
Apple swift-nio-ssh < 0.14.1 0.14.1

References