What’s Vulnerable › Vulnerabilities
CVE-2019-8849
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2019-12-18 · updated 2026-06-17
Description
The issue was addressed by signaling that an executable stack is not required. This issue is fixed in SwiftNIO SSL 2.4.1. A SwiftNIO application using TLS may be able to execute arbitrary code.
Affected products
- Apple swift-nio-ssl: before 2.4.1 — fixed in 2.4.1
How to fix
Upgrade to a fixed version: Apple swift-nio-ssl 2.4.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2019-8849 or the next vulnerability affects your stack