CVE-2026-28857 | Apple Safari/iOS/iPadOS/macOS/visionOS up to 26.3 Web memory corruption

VDB-352959 · CVE-2026-28857 · GCVE-0-2026-28857 APPLE SAFARI/IOS/IPADOS/MACOS/VISIONOS UP TO 26.3 WEB MEMORY CORRUPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $25k-$100k 0.57+ Summaryinfo A vulnerability was found in Apple Safari, iOS, iPadOS, macOS and visionOS up to 26.3. It has been classified as critical. This affects an unknown part of the component Web Handler. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2026-28857. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in Apple Safari, iOS, iPadOS, macOS and visionOS up to 26.3. It has been classified as critical. This affects an unknown code block of the component Web 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 availability. The summary by CVE is: 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, visionOS 26.4. Processing maliciously crafted web content may lead to an unexpected process crash. It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2026-28857 since 03/03/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $25k-$100k at the moment (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 visionOS 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: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 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/visionOS 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-2026-28857 (🔒) GCVE (CVE): GCVE-0-2026-28857 GCVE (VulDB): GCVE-100-352959 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:F63:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸