CVE-2026-20700
Apple Inc. · published 2026-02-11
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-02-12).
- CISA's name for it: Apple Multiple Buffer Overflow Vulnerability
- CISA's description: Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Apple Inc. via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Apple | iOS and iPadOS | 0 – before 26.3: affected |
| Apple | macOS | 0 – before 26.3: affected |
| Apple | tvOS | 0 – before 26.3: affected |
| Apple | visionOS | 0 – before 26.3: affected |
| Apple | watchOS | 0 – before 26.3: affected |
Products named in NVD's CPE match criteria (6)
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 7.8 HIGH — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://support.apple.com/en-us/126346
- https://support.apple.com/en-us/126348
- https://support.apple.com/en-us/126351
- https://support.apple.com/en-us/126352
- https://support.apple.com/en-us/126353
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700
Source dates: published 2026-02-11, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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