CVE-2025-43211: tvos DoS — Fix

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing web content may lead to a denial-of-service.

Is your site exposed to CVE-2025-43211?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.2

MEDIUM

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

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
apple	safari	< 18.6
apple	ipados	< 17.7.9
apple	ipados	18.0 — 18.6
apple	iphone_os	< 18.6
apple	macos	< 15.6
apple	tvos	< 18.6
apple	visionos	< 2.6
apple	watchos	< 11.6

References

Advisories & Patches

https://support.apple.com/en-us/124147 https://support.apple.com/en-us/124148 https://support.apple.com/en-us/124149 https://support.apple.com/en-us/124152 https://support.apple.com/en-us/124153 https://support.apple.com/en-us/124154 https://support.apple.com/en-us/124155

Other References

http://seclists.org/fulldisclosure/2025/Aug/0 http://seclists.org/fulldisclosure/2025/Jul/31 http://seclists.org/fulldisclosure/2025/Jul/32 http://seclists.org/fulldisclosure/2025/Jul/36 http://www.openwall.com/lists/oss-security/2025/08/02/1 https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html

Frequently Asked Questions

What is CVE-2025-43211? +

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing web content may lead to a denial-of-service. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2025-43211? +

CVE-2025-43211 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-43211? +

CVE-2025-43211 affects products from apple, specifically: ipados, iphone_os, macos, safari, tvos, visionos, watchos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43211? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-39313

mcp-framework is a framework for building Model Context Protocol (MCP) servers. In versions 0.2.21 and below, the readRequestBody() function in …

CVE-2026-35469

spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser …

CVE-2026-39803

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows unauthenticated remote denial of service via memory exhaustion. …

CVE-2026-39804

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows unauthenticated remote denial of service via memory exhaustion …

CVE-2026-32688

Allocation of Resources Without Limits or Throttling vulnerability in elixir-plug plug_cowboy allows unauthenticated remote denial of service via atom table …

CVE-2026-10573

A denial-of-service security issue exists in 1734 POINT I/O™ module. The security issue stems from improper handling of crafted CIP …

CVE-2025-43211