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CVE-2026-43661 is a buffer overflow vulnerability in Apple ImageIO. When the component processes a maliciously crafted image, insufficiently safe memory handling can lead to process memory corruption. Apple indicates the issue was addressed through improved memory handling. The vulnerability affects multiple Apple operating systems, including iOS, iPadOS, macOS, tvOS, and watchOS releases prior to the patched versions.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A memory corruption vulnerability in ImageIO triggered by processing a maliciously crafted image.
A buffer overflow vulnerability in macOS Tahoe where processing a maliciously crafted image may corrupt process memory.
A buffer overflow vulnerability in Apple TV image processing that could corrupt process memory.
A buffer overflow in image processing that could corrupt process memory.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.