Buffer Overflow in Apple ImageIO Image Processing
CVE-2026-43661 is a buffer overflow vulnerability in Apple ImageIO. According to the provided advisory text, processing a maliciously crafted image can corrupt process memory. Apple states the issue was addressed with improved memory handling. The vulnerability affects Apple platforms including iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, and watchOS 26.5. The vulnerable condition is triggered during image parsing/processing in ImageIO when handling attacker-controlled image content.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
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.
The version that knows your environment.
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.