CVE-2026-20700 (GCVE-0-2026-20700)

Vulnerability from cvelistv5 – Published: 2026-02-11 22:58 – Updated: 2026-04-02 18:23
VLAI? CISA KEV
Summary
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • 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.
Assigner
References
Impacted products
Vendor Product Version
Apple iOS and iPadOS Affected: 0 , < 26.3 (custom)
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    Apple macOS Affected: 0 , < 26.3 (custom)
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    Apple tvOS Affected: 0 , < 26.3 (custom)
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    Apple visionOS Affected: 0 , < 26.3 (custom)
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    Apple watchOS Affected: 0 , < 26.3 (custom)
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CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 453a593e-6c26-4c36-81a2-1d550d822df5

Vulnerability ID: CVE-2026-20700

Status: Confirmed

Status Updated: 2026-02-12 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-02-12
Asserted: 2026-02-12
Scope
Notes: KEV entry: Apple Multiple Buffer Overflow Vulnerability | Affected: Apple / Multiple Products | 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. | 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. | Due date: 2026-03-05 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): 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://nvd.nist.gov/vuln/detail/CVE-2026-20700
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-119
Feed CISA Known Exploited Vulnerabilities Catalog
Product Multiple Products
Due Date 2026-03-05
Date Added 2026-02-12
Vendorproject Apple
Vulnerabilityname Apple Multiple Buffer Overflow Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-13 07:17 UTC | Updated: 2026-02-13 07:17 UTC
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To clipboard 

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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.