VulnerabilityModified

CVE-2026-43718

A stack overflow was addressed with improved input validation.

MEDIUM 6.5EPSS 0.41%

Does this matter?

Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.

Description

A stack overflow was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS 3.1: 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS: 0.41% probability · 35th percentile
CISA KEV: Not listed
Weakness: CWE-121
Affected: apple/safari · apple/ipados · apple/iphone os · apple/macos
Source: product-security@apple.com

References

https://support.apple.com/en-us/127594Vendor Advisory
https://support.apple.com/en-us/127595Vendor Advisory
https://support.apple.com/en-us/127685Vendor Advisory
https://support.apple.com/en-us/128068
https://support.apple.com/en-us/128069
https://support.apple.com/en-us/128070

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.