Quick answers
- Is CVE-2026-43718 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43718 being exploited in the wild.
- How severe is CVE-2026-43718?
- Informational severity, with a CVSS score of 4.3, published 29 June 2026.
- Which products and versions are affected?
- Apple iPadOS < 26.5.2; Apple macOS Tahoe < 26.5.2; Apple Safari < 26.5.2.
- Is there a fix for CVE-2026-43718?
- A patch was published on 2026-06-29. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-43718 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-43718?
- Check whether you run Apple iPadOS, Apple macOS Tahoe or Apple Safari at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stack overflow vulnerability exists in Apple Safari, iOS, iPadOS, and macOS Tahoe due to insufficient input validation when processing web content. An attacker can exploit this by enticing a user to visit a maliciously crafted webpage, leading to a denial-of-service (DoS) condition via a browser crash. The issue was addressed by improving input validation in the affected components. Patches are available in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.
Affected products
- Apple Safari < 26.5.2
- Apple iOS and iPadOS < 26.5.2
- Apple macOS Tahoe < 26.5.2
Timeline
- 2026-06-29: disclosed
- 2026-06-29: patched
- 2026-06-29: advisory