CVE-2019-8849

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published
Dec 18, 2019
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2019

CVE-2019-88505.5An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15, iOS 13.1 and iPadOS 13.1, tCVE-2019-88517.5A logic issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.2, Security Update 2019-002 Mojave, CVE-2019-88527.8A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.2, Security Update 2019-0CVE-2019-88535.5A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 MCVE-2019-88547.5A user privacy issue was addressed by removing the broadcast MAC address. This issue is fixed in macOS Catalina 10.15, watchOS 6, iOS 13, tvCVE-2019-88556.3An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Catalina 10.15. A malicious application mayCVE-2019-88563.3An API issue existed in the handling of outgoing phone calls initiated with Siri. This issue was addressed with improved state handling. ThiCVE-2019-88573.3The issue was addressed with improved validation when an iCloud Link is created. This issue is fixed in iOS 13.3 and iPadOS 13.3. Live PhotoCVE-2019-88585.3A logic issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.1, Security Update 2019-001, and SecCVE-2019-88984.3An information disclosure issue existed in the handling of the Storage Access API. This issue was addressed with improved logic. This issue CVE-2019-89006.8A vulnerability in the SecureROM of some Apple devices can be exploited by an unauthenticated local attacker to execute arbitrary code upon CVE-2019-89016.5This issue was addressed by verifying host keys when connecting to a previously-known SSH server. This issue is fixed in iOS 13.1 and iPadOS
CVE-2019-8849: Critical severity, CVSS 9.8 | Vulnix