Known exploited · Apple

CVE-2023-41064: Apple iOS, iPadOS, and macOS ImageIO Buffer Overflow Vulnerability

What it is

Apple iOS, iPadOS, and macOS contain a buffer overflow vulnerability in ImageIO when processing a maliciously crafted image, which may lead to code execution. This vulnerability was chained with CVE-2023-41061.

Added September 11, 2023Due October 2, 2023CISA KEV catalog 2026.10.01

Vendor: Apple
Product: iOS, iPadOS, and macOS
Added to KEV: September 11, 2023
CISA due date: October 2, 2023
Ransomware use: Unknown
Weakness: CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

What CISA requires

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Forensic triage

What to do now

Find every instance of iOS, iPadOS, and macOS you run, including the forgotten ones, and check its version against the vendor advisory.
Apply the vendor's fix or mitigation, before October 2, 2023 if you are bound by CISA's deadline, sooner if it faces the internet.
Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.

References

CVE-2023-41064 in the National Vulnerability Database

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Source: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.