CVE-2026-20635
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Processing malicious web content can cause unexpected process crash due to memory handling issue in multiple Apple products, patched in February 2026.
Vulnerability
Analysis
CVE-2026-20635 is a memory handling vulnerability in Apple's WebKit engine, affecting Safari and various operating systems including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS [1][2][3][4]. The root cause is improper memory management when processing maliciously crafted web content, potentially leading to memory corruption.
The attack vector is via web content; an attacker would need to entice a user to visit a specially crafted webpage. No additional privileges or physical access are required. The vulnerability can be triggered remotely through Safari or any application that uses WebKit [1][2][3][4].
Successful exploitation results in an unexpected process crash, causing a denial of service. The impact is limited to application termination; there is no indication of code execution or data exfiltration.
Apple addressed the issue in updates released on February 11, 2026: Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, and watchOS 26.3 [1][2][3][4]. Users are advised to update their devices to the latest software versions.
AI Insight generated on May 19, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
7Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- support.apple.com/en-us/126346nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126347nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126348nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126351nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126352nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126353nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126354nvdRelease NotesVendor Advisory
News mentions
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