CVEs / CVE-2025-43300
CVE-2025-43300: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
- Known exploited in the CISA KEV catalog since 21 Aug 2025
- critical 10 CVSS 3.1 (from the CNA)
- EPSS 65.1% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Apple iOS, iPadOS, and macOS contain an out-of-bounds write vulnerability in the Image I/O framework.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apple iOS and iPadOS | before 15.8.5 | 15.8.5 |
| Apple iOS and iPadOS | before 16.7.12 | 16.7.12 |
| Apple iOS and iPadOS | before 18.6.2 | 18.6.2 |
| Apple iPadOS | before 17.7.10 | 17.7.10 |
| Apple macOS | before 13.7.8 | 13.7.8 |
| Apple macOS | before 14.7.8 | 14.7.8 |
| Apple macOS | before 15.6.1 | 15.6.1 |
Exploitation
| In CISA KEV since | 21 Aug 2025 |
|---|---|
| Due date for US federal agencies | 11 Sep 2025 |
| Used in ransomware campaigns | 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. |
Severity
| CVSS 3.1 | 10 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2025-43300 on NVD
- CVE-2025-43300 in the CISA KEV catalog
- https://support.apple.com/en-us/124925 (cited by CISA)
- https://support.apple.com/en-us/124926 (cited by CISA)
- https://support.apple.com/en-us/124927 (cited by CISA)
- https://support.apple.com/en-us/124928 (cited by CISA)
- https://support.apple.com/en-us/124929 (cited by CISA)
- https://support.apple.com/en-us/124925 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/124926 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/124927 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/124928 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/124929 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125141 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125142 Release Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2025/Sep/10 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/14 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/52 Mailing List, Third Party Advisory
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md Exploit, Third Party Advisory
- https://github.com/cisagov/vulnrichment/issues/201 Issue Tracking
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.