CVE-2025-43300
Out-of-bounds Write
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
Official description from the CVE record, published by apple. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
CVSS 3.1 Critical 10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: None
No account or privileges are needed.
User interaction: None
No action from any user is needed.
Scope: Changed
The impact can reach other components beyond the vulnerable one.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: High
Serious or total effect on the trustworthiness of data.
Availability impact: High
Serious or total effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. |
| Privileges required | None | No account or privileges are needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Changed | The impact can reach other components beyond the vulnerable one. |
| Confidentiality impact | High | Serious or total effect on the secrecy of data. |
| Integrity impact | High | Serious or total effect on the trustworthiness of data. |
| Availability impact | High | Serious or total effect on availability. |
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EPSS
- Score
- 0.65159 (65.2% probability)
- Percentile
- 99.3%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
CISA Known Exploited Vulnerabilities
- Name in the catalog
- Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
- Added to the catalog
- Aug 21, 2025
- Federal due date
- Sep 11, 2025
CISA assessment as of Nov 27, 2025
- Exploitation
- Recorded by CISA as active
- Automatable
- yes
- Technical impact
- total
Weakness (CWE)
- CWE-787Out-of-bounds Write
Affected products
Apple iOS and iPadOS
- affected: before 15.8.5
- affected: before 16.7.12
- affected: before 18.6.2
Apple iPadOS
- affected: before 17.7.10
Apple macOS
- affected: before 13.7.8
- affected: before 14.7.8
- affected: before 15.6.1
References
- support.apple.com/en-us/124925
- support.apple.com/en-us/124926
- support.apple.com/en-us/124927
- support.apple.com/en-us/124928
- support.apple.com/en-us/124929
- support.apple.com/en-us/125141
- support.apple.com/en-us/125142
- github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
- seclists.org/fulldisclosure/2025/Sep/52
- seclists.org/fulldisclosure/2025/Sep/14
- seclists.org/fulldisclosure/2025/Sep/10
Timeline
- ID reserved
- Added to CISA KEV
- Record published
- Record last updated
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About CubePath
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:15 UTC. Sources and licenses