CVE-2026-20700
Confirmed PUBLISHEDA 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...
1 day faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Feb 11, 2026
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 7.8 High
- EPSS
- 1.3%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Apple |
iOS and iPadOS
|
0 to < 26.3 |
Affected |
| Apple |
macOS
|
0 to < 26.3 |
Affected |
| Apple |
tvOS
|
0 to < 26.3 |
Affected |
| Apple |
visionOS
|
0 to < 26.3 |
Affected |
| Apple |
watchOS
|
0 to < 26.3 |
Affected |
CVE References
- 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
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:50 UTC |
| CISA | 2026-06-02 14:03 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 10:50:52 UTC · CVE
Proof of concept available
Recorded 2026-05-25 14:56:13 UTC · GitHub
Weaknesses (CWE)
-
Improper Restriction of Operations within the Bounds of a Memory Buffer
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2026-05-25 14:56:13 UTC · 0 stars
github · Created 2026-05-23 20:25:02 UTC · 8 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:03 UTC about 2 months ago14:03 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
10:50 UTC about 2 months ago10:50 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
20:25 UTC about 2 months ago20:25 UTC · about 2 months ago
Public PoC available
Public proof-of-concept code published
-
22:58 UTC 5 months ago22:58 UTC · 5 months ago
CVE published
Vulnerability disclosed publicly
-
14:43 UTC 8 months ago14:43 UTC · 8 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-20700
{
"cve_id": "CVE-2026-20700",
"title": "A memory corruption issue was addressed with improved state management. This ...",
"affected_vendor": "Apple",
"affected_product": "iOS and iPadOS, macOS, tvOS, visionOS, watchOS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.8,
"epss_score": 0.01319,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}