High severity · published Feb 11, 2026
CVE-2026-20700
Apple Multiple Buffer Overflow Vulnerability
In wildKEV
7.8
CVSS
1.7%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildYes
CISA KEVListed Feb 12, 2026
Federal remediation dueMar 5, 2026
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 26.3 · source: vendor, NVD
IO
iOS · Apple
before 26.3 · source: NVD
IA
iOS and iPadOS · Apple
before 26.3 · source: vendor
TV
tvOS · Apple
before 26.3 · source: vendor, NVD
VI
visionOS · Apple
before 26.3 · source: vendor, NVD
WA
watchOS · Apple
before 26.3 · source: vendor, NVD
MP
Multiple Products · Apple
All versions, or not specified · source: KEV
In the news
VulnerabilityCritical
[CISA KEV] CVE-2026-20700: Apple Multiple Products - Apple Multiple Buffer Overflow Vulnerability
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.
MPMultiple ProductsCVE-2026-20700
Feb 12, 2026·CISA KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20700
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20700
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
support.apple.com
https://support.apple.com/en-us/126346
support.apple.com
https://support.apple.com/en-us/126348
support.apple.com
https://support.apple.com/en-us/126351
support.apple.com
https://support.apple.com/en-us/126352
support.apple.com
https://support.apple.com/en-us/126353
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