CVE-2026-28859 | Apple Safari/iOS/iPadOS/macOS/tvOS/visionOS/watchOS up to 26.3 Website memory corruption

VDB-352956 · CVE-2026-28859 · GCVE-0-2026-28859 APPLE SAFARI/IOS/IPADOS/MACOS/TVOS/VISIONOS/WATCHOS UP TO 26.3 WEBSITE MEMORY CORRUPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $25k-$100k 5.09+ Summaryinfo A vulnerability, which was classified as critical, was found in Apple Safari, iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 26.3. Affected is an unknown function of the component Website Handler. The manipulation results in memory corruption. This vulnerability is identified as CVE-2026-28859. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, was found in Apple Safari, iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 26.3. Affected is some unknown functionality of the component Website Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox. The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2026-28859 since 03/03/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $25k-$100k (estimation calculated on 03/25/2026). Upgrading to version 26.4 eliminates this vulnerability. Productinfo Type Web Browser Vendor Apple Name iOS iPadOS macOS Safari tvOS visionOS watchOS Version 26.0 26.1 26.2 26.3 License commercial Website Vendor: https://www.apple.com/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Memory corruption CWE: CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Safari/iOS/iPadOS/macOS/tvOS/visionOS/watchOS 26.4 Timelineinfo 03/03/2026 CVE reserved 03/25/2026 +22 days Advisory disclosed 03/25/2026 +0 days VulDB entry created 03/25/2026 +0 days VulDB entry last update Sourcesinfo Vendor: apple.com Advisory: support.apple.com Status: Confirmed CVE: CVE-2026-28859 (🔒) GCVE (CVE): GCVE-0-2026-28859 GCVE (VulDB): GCVE-100-352956 scip Labs: https://www.scip.ch/en/?labs.20180712 Entryinfo Created: 03/25/2026 07:52 Changes: 03/25/2026 07:52 (57) Complete: 🔍 Cache ID: 99:FEB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸