--- title: "CVE-2026-86950: Out-of-bounds Write | CubePath" description: "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS…" language: en source: https://cubepath.com/security/cve/CVE-2026-86950 --- # CVE-2026-86950: Out-of-bounds Write | CubePath ## Description An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1\. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27. Official description from the CVE record, published by apple. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-86950) ## Key data ### CVSS 3.1 High 8.8 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.26166 (26.2% probability) Percentile 98.0% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Apple Multiple Products Out-of-Bounds Write Vulnerability Added to the catalog Sep 29, 2026 Federal due date Oct 13, 2026 ### CISA assessment as of Sep 30, 2026 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-787](https://cwe.mitre.org/data/definitions/787.html) Out-of-bounds Write ## Affected products Products listed in the CVE record, as the CNA published them. - Apple iOS and iPadOS - affected: before 18.7.11 - affected: before 26.7.1 - Apple macOS - affected: before 15.8.1 - affected: before 26.7.1 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [support.apple.com/en-us/149225](https://support.apple.com/en-us/149225) - [support.apple.com/en-us/149226](https://support.apple.com/en-us/149226) - [support.apple.com/en-us/149228](https://support.apple.com/en-us/149228) - [support.apple.com/en-us/149229](https://support.apple.com/en-us/149229) - [seclists.org/fulldisclosure/2026/Sep/89](http://seclists.org/fulldisclosure/2026/Sep/89) - [seclists.org/fulldisclosure/2026/Sep/90](http://seclists.org/fulldisclosure/2026/Sep/90) - [seclists.org/fulldisclosure/2026/Sep/91](http://seclists.org/fulldisclosure/2026/Sep/91) ## Timeline 1. ID reserved Sep 8, 2026 2. Record published Sep 28, 2026 3. Added to CISA KEV Sep 29, 2026 4. Record last updated Oct 26, 2026 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:53 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)