CVE-2025-43300
Actively exploited. CVE-2025-43300 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-21) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-43300 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
Apple iOS, iPadOS, and macOS contain an out-of-bounds write vulnerability in the Image I/O framework.
CSIRTS triage
- What
- An out-of-bounds write vulnerability exists in the Image I/O framework.
- Who is affected
- Users of Apple iOS, iPadOS, and macOS.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Users should update to the latest versions of iOS, iPadOS, and macOS.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 97% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2025-43300 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2025-43300: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerabilitycisa-kev · 2025-08-21
External references
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[](https://www.csirts.com/cve/CVE-2025-43300)