What it is
CVE-2026-20700 is a vulnerability affecting Apple iOS and iPadOS and 4 other products. A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2026-20700
iOS and iPadOS
Apple / iOS and iPadOS · affected before 26.3
- Severity
- CVSS 7.8 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 1.3%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Apple / iOS and iPadOS affected before 26.3.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
A memory corruption issue was addressed with improved state management
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.
Vendor
Product
Affected
Status
Apple
iOS and iPadOS
Before 26.3
Affected
Apple
macOS
Before 26.3
Affected
Apple
tvOS
Before 26.3
Affected
Apple
visionOS
Before 26.3
Affected
Apple
watchOS
Before 26.3
Affected
- Published
- 11 Feb 2026
- Exploitation Reported
- 01 Jun 2026
- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
Tags
cisa
macos
ios
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-20700
- support.apple.com/en-us/126346 support.apple.com · CVE Record https://support.apple.com/en-us/126346
- support.apple.com/en-us/126348 support.apple.com · CVE Record https://support.apple.com/en-us/126348
- support.apple.com/en-us/126351 support.apple.com · CVE Record https://support.apple.com/en-us/126351
- support.apple.com/en-us/126352 support.apple.com · CVE Record https://support.apple.com/en-us/126352
- support.apple.com/en-us/126353 support.apple.com · CVE Record https://support.apple.com/en-us/126353
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CVE
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:50 UTC |
| CISA | 2026-06-02 14:03 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
7.8
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.3%
Timeline
From disclosure to observed exploitation
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2026-20700
Free JSON includes basic KEV fields{
"cve_id": "CVE-2026-20700",
"confidence": "Confirmed",
"cvss_score": 7.8,
"cvss_estimated": false,
"epss_score": 0.01319,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.