CVE-2025-43520 kev in the critical feed json
A memory corruption issue was addressed with improved memory handling.
published 2025-12-12 10 mo ago modified 2026-10-07 33 d ago also EUVD-2025-203153
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Exploited
- added 2026-03-20
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
cisa 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.
- Apple iOS and iPadOS 18.7.2, 26.1
- Apple macOS 14.8.2, 15.7.2, 26.1
- Apple tvOS 26.1
- Apple visionOS 26.1
- Apple watchOS 26.1
Timeline
- Published
- Added to CISA KEV
- CISA SSVC: exploitation active
- CISA patch deadline
Known exploited
- Added
- 7 mo ago
- Patch by
- 2026-04-03 (7 mo ago)
- Ransomware
- Not known
- 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.
- Vendor, product
- Apple, Multiple Products
- CISA name
- Apple Multiple Products Classic Buffer Overflow Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Apple iOS and iPadOS
- Apple macOS
- Apple tvOS
- Apple visionOS
- Apple watchOS
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
support.apple.com
/en-us/125632
release-notes, vendor-advisory
-
support.apple.com
/en-us/125633
release-notes, vendor-advisory
-
support.apple.com
/en-us/125634
release-notes, vendor-advisory
-
support.apple.com
/en-us/125635
release-notes, vendor-advisory
-
support.apple.com
/en-us/125636
release-notes, vendor-advisory
-
support.apple.com
/en-us/125637
release-notes, vendor-advisory
-
support.apple.com
/en-us/125638
release-notes, vendor-advisory
-
support.apple.com
/en-us/125639
release-notes, vendor-advisory
-
cloud.google.com
/blog/topics/threat-intelligence/darksword-ios-exploit-chain/
third-party-advisory, technical-description
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520
government-resource, us-government-resource
Sources
- CVE List CVE-2025-43520
- NVD CVE-2025-43520
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.