CVE-2026-43661

Description

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0006

Probability of exploitation

0.19%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
apple	ipados	< 26.5
apple	iphone_os	< 26.5
apple	macos	26.0 — 26.5
apple	tvos	< 26.5
apple	watchos	< 26.5

References

Advisories & Patches

https://support.apple.com/en-us/127110 https://support.apple.com/en-us/127115 https://support.apple.com/en-us/127118 https://support.apple.com/en-us/127119

Frequently Asked Questions

What is CVE-2026-43661? +

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-43661? +

CVE-2026-43661 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0006, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43661? +

CVE-2026-43661 affects products from apple, specifically: ipados, iphone_os, macos, tvos, watchos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43661? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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