# CVE-2026-20700: Apple Multiple Buffer Overflow Vulnerability

> CVE-2026-20700: Apple Multiple Buffer Overflow Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2026-20700
Last updated: 2026-06-17T10:17:43Z

- Published: 2026-02-11 22:58 UTC · Updated: 2026-06-17 10:17 UTC · Assigner: apple
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 1.7%, 77th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-02-12, federal due date 2026-03-05, ransomware use: Unknown

## Description

A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. 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 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.

## CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- Apple: iOS and iPadOS
- Apple: macOS
- Apple: tvOS
- Apple: visionOS
- Apple: watchOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20700)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-20700)
- [https://support.apple.com/en-us/126346](https://support.apple.com/en-us/126346)
- [https://support.apple.com/en-us/126348](https://support.apple.com/en-us/126348)
- [https://support.apple.com/en-us/126351](https://support.apple.com/en-us/126351)
- [https://support.apple.com/en-us/126352](https://support.apple.com/en-us/126352)
- [https://support.apple.com/en-us/126353](https://support.apple.com/en-us/126353)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2026-20700 · Markdown: https://rewindex.com/cve/CVE-2026-20700.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-20700 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:24.856Z