What’s Vulnerable › Vulnerabilities
CVE-2026-43798
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-20 · updated 2026-10-18
- Weakness: CWE-121
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
- Apple swift-nio-ssh: before 0.14.1 — fixed in 0.14.1
How to fix
Upgrade to a fixed version: Apple swift-nio-ssh 0.14.1. Check the vendor advisory for mitigations.
References
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