CVE-2026-20700

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.

Overview

State: PUBLISHED
Assigner (CNA): apple
CVSS severity: —
CVSS score: —
CVSS vector: AV:L/AC:L/Au:S/C:C/I:C/A:C
Effective score: 7.8 / 10 HIGH source: NVD
CWE(s): —
Reserved: 2025-11-11
Published: 2026-02-11 23:58 UTC
Last updated: 2026-04-02 20:23 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/20xxx/CVE-2026-20700.json
Linked Threat: CVE-2026-20700 — Apple Multiple Products: Apple Multiple Buffer Overflow Vulnerability

CISA Known Exploited Vulnerabilities CISA KEV

CISA has confirmed in-the-wild exploitation of this CVE. Federal agencies must remediate by the due date below; private orgs should treat it as priority-1.

Vulnerability name: Apple Multiple Buffer Overflow Vulnerability
Vendor / project: Apple
Product: Multiple Products
Date added to KEV: 2026-02-12
Remediation due: 2026-03-05
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.
Ransomware campaign use: Unknown
CISA notes: 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
CISA listing: www.cisa.gov/known-exploited-vulnerabilities-catalog

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-02-11 23:16:10 UTC
NVD last modified: 2026-03-25 17:39:37 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0043 (probability of exploitation in next 30 days)
EPSS percentile: 63.09% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25

NVD-assigned CWE(s): CWE-119 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-6189
Assigner: apple
Published: Feb 11, 2026, 10:58:54 PM
Updated: Apr 2, 2026, 6:23:25 PM
EUVD base score (CVSS 3.1): 7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EUVD-reported EPSS: 1.3200
Vendors: Apple
Products: iOS and iPadOS (0 <26.3)

macOS (unspecified <26.3)

watchOS (unspecified <26.3)

tvOS (0 <26.3)

iOS and iPadOS (unspecified <26.3)

visionOS (0 <26.3)

visionOS (unspecified <26.3)

tvOS (unspecified <26.3)

watchOS (0 <26.3)

macOS (0 <26.3)
Aliases: GHSA-j5x8-2r52-c3ff

ENISA 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.

EUVD references (5)

Affected products (5)

Vendor	Product	Versions	Platforms
Apple	iOS and iPadOS	`0` (affected)	—
Apple	macOS	`0` (affected)	—
Apple	tvOS	`0` (affected)	—
Apple	visionOS	`0` (affected)	—
Apple	watchOS	`0` (affected)	—

Affected products — CPE 2.3 (6) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

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:*:*:*:*:*:*:*:*

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

MITRE references (4) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Web references (5)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

http://cwe.mitre.org/data/definitions/119.html rapid7:cwe.mitre.org
https://www.cve.org/CVERecord?id=CVE-2026-20700 rapid7:www.cve.org
https://attackerkb.com/topics/CVE-2026-20700 rapid7:attackerkb.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-6189 rapid7:euvd.enisa.europa.eu
https://support.apple.com/en-us/126348 rapid7:support.apple.com

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://support.apple.com/en-us/126346 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/126348 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/126351 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/126352 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/126353 product-security@apple.com Release NotesVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700 134c704f-9b21-4f2e-91b3-4a467353bcc0 US Government Resource

Indicators (2)

IOCs linked to the auto-promoted Threat row.

Type	Value	VirusTotal	Attached
cwe	`CWE-119`	no local data	2026-05-14 02:58 UTC
cve	`CVE-2026-20700`	no local data	2026-05-14 02:58 UTC

Remediations (16)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

CVE-2026-20700: Apple Patches Zero-Day Exploited in Sophisticated Cyber ...

web:hawk-eye.io

When Apple pushes an emergency patch and references an "extremely sophisticated attack" in the same breath, it's worth stopping to pay attention. CVE-2026-20700 is the first actively exploited zero-day of 2026 , and it was already being used against real targets before a fix existed.

2026-05-23 19:01 UTC
Apple released Patches iOS Zero-Day (CVE-2026-20700) Exploited in wild

web:infosecbulletin.com

Apple has released an urgent security update for all its mobile devices to fix a serious zero-day vulnerability being exploited in a targeted attack describes as an "extremely sophisticated attack" against specific individuals. CVE-2026-20700 is a serious vulnerability that prompted Apple to release iOS 26.3 and iPadOS 26.3 to protect users from unauthorized code execution.

2026-05-23 19:01 UTC
Nvd - Cve-2026-20700

web:nvd.nist.gov

An official website of the United States government Here's how you know

2026-05-23 19:01 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-23 19:01 UTC
CVE-2026-20700 | High Vulnerability in Apple iOS and macOS

web:www.appsecure.security

CVE-2026-20700 CVE-2026-20700 : High Vulnerability in Apple iOS and macOS A high-severity memory corruption vulnerability in Apple devices could allow attackers to execute arbitrary code. Organizations should prioritize patching to mitigate risks associated with this vulnerability.

2026-05-23 19:01 UTC
CVE Record: CVE-2026-20700

web:www.cve.org

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 ...

2026-05-23 19:01 UTC
Apple patches zero-day flaw that could let attackers take control of ...

web:www.malwarebytes.com

Apple issued security updates for all devices which include a patch for an actively exploited zero-day—tracked as CVE-2026-20700 .

2026-05-23 19:01 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-23 19:01 UTC
Windows 11 April 2026 Update tested: What's new, improved and fixed

web:www.windowslatest.com

Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

2026-05-23 19:01 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-23 19:01 UTC
CVE-2026-20700 - Vulnerability Details - OpenCVE

web:app.opencve.io

Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Install the latest operating system update (iOS 26.3, iPadOS 26.3, macOS 26.3, tvOS 26.3, visionOS 26.3, or watchOS 26.3) on all affected devices. Reboot the device after installing the update to ensure the patch takes effect.

2026-05-14 16:20 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

2026-05-14 16:20 UTC
CVE-2026-20700 | Apple Multiple Products Vulnerability | UpGuard

web:www.upguard.com

CVE-2026-20700 is a high-severity memory corruption flaw in Apple OSs, actively exploited for arbitrary code execution. Update to version 26.3.

2026-05-14 16:20 UTC
January 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft has released security updates for 114 vulnerabilities, including three zero-days, plus eight critical CVEs in its January 2026 Patch Tuesday rollout.

2026-05-14 16:20 UTC
May 2026 Patch Tuesday: no zero-days but plenty to fix

web:www.malwarebytes.com

May's Patch Tuesday may not be the giant release many expected, but there are still plenty of important fixes that shouldn't be ignored.

2026-05-14 16:20 UTC
CISA Required Action

CISA KEV

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: Unknown

2026-05-14 01:13 UTC

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

The full cvelistV5 record. Download as CVE-2026-20700.json.

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