CVE-2025-43300
CriticalExploitedPublic exploitAn out-of-bounds write issue was addressed with improved bounds checking.
Published Aug 20, 2025 · Updated Apr 3, 2026 · Also known as TR-26-1145
Key Facts
Patch immediately- CVE-2025-43300 is a critical-severity vulnerability (CVSS 10.0 v3.1) affecting iPadOS (Apple), Iphone OS (Apple), macOS (Apple) and 1 more product.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 20, 2025. Public exploit code is available.
- EPSS estimates a 32% probability of exploitation in the next 30 days.
- Fixed versions are available, including iPadOS 15.8.5, iPadOS 17.7.10, Iphone OS 15.8.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
32%
Higher than 98.3% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-43300 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 21, 2025 | Sep 11, 2025 | Not reported |
| Industry KEV feed | Aug 20, 2025 | Sep 11, 2025 | Not reported |
| CIRCL KEV | Aug 21, 2025 | Sep 11, 2025 | Not reported |
| ENISA EUVD | Aug 21, 2025 | n/a | Not reported |
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.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| iPadOSApple | See advisory | 15.8.5 |
| Iphone OSApple | See advisory | 15.8.5 |
| macOSApple | See advisory | 13.7.8 |
| iOS and iPadOS | See advisory | 15.8.5 |
Patched Releases
iPadOS
15.8.5, 17.7.10
Iphone OS
15.8.5
macOS
13.7.8, 14.7.8, 15.6.1
iOS and iPadOS
15.8.5, 16.7.12, 18.6.2
Timeline
Publicly disclosed
Aug 20, 2025
Added to Industry KEV feed
Aug 20, 2025
Added to CISA KEV
Aug 21, 2025
Added to CIRCL KEV
Aug 21, 2025
Added to ENISA EUVD
Aug 21, 2025
Last updated
Apr 3, 2026
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisoryhttp://seclists.org/fulldisclosure/2025/Sep/10
- advisoryhttp://seclists.org/fulldisclosure/2025/Sep/14
- advisoryhttp://seclists.org/fulldisclosure/2025/Sep/52
- advisoryhttps://github.com/hunters-sec/CVE-2025-43300
- advisoryhttps://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/43xxx/CVE-2025-43300.json
FAQ
Common Questions.
An out-of-bounds write issue was addressed with improved bounds checking.
Affected: iPadOS (Apple); Iphone OS (Apple); macOS (Apple), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 20, 2025.
Yes. It was added on Aug 21, 2025 with a federal remediation due date of Sep 11, 2025.
Public exploit code is available.
Fixed versions are available, including iPadOS 15.8.5, iPadOS 17.7.10, Iphone OS 15.8.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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