CVE-2025-43300 KEV
10.0
CRITICAL · CVSS 3.1 · EPSS 22% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2025-09-11.
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.
Scoring
| CVSS | 10.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 21.99% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2025-09-11 |
| Public exploit | none known |
| Published | 2025-08-21 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability |
|---|---|
| Added | 2025-08-21 |
| Due | 2025-09-11 |
| Vendor / product | Apple / iOS, iPadOS, and macOS |
| Ransomware use | none reported |
Affected (3)
| Vendor | Product |
|---|---|
| apple | ipados |
| apple | iphone os |
| apple | macos |
References
- https://support.apple.com/en-us/124925
- https://support.apple.com/en-us/124926
- https://support.apple.com/en-us/124927
- https://support.apple.com/en-us/124928
- https://support.apple.com/en-us/124929
- https://support.apple.com/en-us/125141
- https://support.apple.com/en-us/125142
- http://seclists.org/fulldisclosure/2025/Sep/10
- http://seclists.org/fulldisclosure/2025/Sep/14
- http://seclists.org/fulldisclosure/2025/Sep/52
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
- https://github.com/cisagov/vulnrichment/issues/201
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300
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