CVE-2025-43520
Exploitation confirmed. First attested on 2026-03-20 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2025-12-12
- Fixed in15.7.2 · 14.8.2
- WeaknessCWE-120
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTCObserved activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-43520?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-43520?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.x | ≥ 15.0, < 15.7.2 | 15.7.2 | NVD |
| 14.x | ≥ 14.0, < 14.8.2 | 14.8.2 | NVD |
| 26.0 | = 26.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 18.7 | < 18.7.2 | 18.7.2 | NVD |
| 26.0 | = 26.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 18.7 | < 18.7.2 | 18.7.2 | NVD |
| 26.0 | = 26.0 | no fix published | NVD |
3 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Apple macos to 15.7.2 · 14.8.2
- CISA’s 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.due 2026-04-03
Advisories and patches
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comRelease Notes · Vendor Advisory
- support.apple.comRelease Notes · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2026-03-20
- Patch Due Date
- 2026-04-03
- Ransomware Use
- Unknown
- 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.
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Published
- 2025-12-12
- Last Modified
- 2026-10-07
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2025-43520?
Is CVE-2025-43520 actively exploited?
What is the CVSS score for CVE-2025-43520?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.