CVE-2025-43520
Confirmed PUBLISHEDA memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS...
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 memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
- CVE Published
- Dec 12, 2025
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 5.5 Medium
- EPSS
- 0.4%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Apple |
iOS and iPadOS
|
0 to < 18.7.2 |
Affected |
| Apple |
iOS and iPadOS
|
0 to < 26.1 |
Affected |
| Apple |
macOS
|
0 to < 14.8.2 |
Affected |
| Apple |
macOS
|
0 to < 15.7.2 |
Affected |
| Apple |
macOS
|
0 to < 26.1 |
Affected |
| Apple |
tvOS
|
0 to < 26.1 |
Affected |
| Apple |
visionOS
|
0 to < 26.1 |
Affected |
| Apple |
watchOS
|
0 to < 26.1 |
Affected |
CVE References
- support.apple.com/en-us/125632 support.apple.com · CVE Record https://support.apple.com/en-us/125632
- support.apple.com/en-us/125633 support.apple.com · CVE Record https://support.apple.com/en-us/125633
- support.apple.com/en-us/125634 support.apple.com · CVE Record https://support.apple.com/en-us/125634
- support.apple.com/en-us/125635 support.apple.com · CVE Record https://support.apple.com/en-us/125635
- support.apple.com/en-us/125636 support.apple.com · CVE Record https://support.apple.com/en-us/125636
Show 3 more references
- support.apple.com/en-us/125637 support.apple.com · CVE Record https://support.apple.com/en-us/125637
- support.apple.com/en-us/125638 support.apple.com · CVE Record https://support.apple.com/en-us/125638
- support.apple.com/en-us/125639 support.apple.com · CVE Record https://support.apple.com/en-us/125639
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- 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 12:25 UTC |
| CISA | 2026-06-02 14:02 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:N/I:N/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 12:25:49 UTC · CVE
Weaknesses (CWE)
-
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:02 UTC about 2 months ago14:02 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
12:25 UTC about 2 months ago12:25 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
20:56 UTC 7 months ago20:56 UTC · 7 months ago
CVE published
Vulnerability disclosed publicly
-
15:27 UTC over 1 year ago15:27 UTC · over 1 year 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-2025-43520
{
"cve_id": "CVE-2025-43520",
"title": "A memory corruption issue was addressed with improved memory handling. This i...",
"affected_vendor": "Apple",
"affected_product": "iOS and iPadOS, macOS, tvOS, visionOS, watchOS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 5.5,
"epss_score": 0.00401,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}