Out-of-bounds access in Apple ImageIO media file processing
CVE-2025-43338 is an out-of-bounds access vulnerability in Apple ImageIO. According to the provided advisory content, the flaw is triggered when ImageIO processes a maliciously crafted media file. Apple states the issue was addressed through improved bounds checking. Successful triggering may lead to unexpected application termination or corruption of process memory. The issue is reported as affecting Apple platforms including macOS Sonoma prior to 14.8.2, and later advisory content also lists a fix in macOS Tahoe 26.
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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
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Malicious media file processing issue in ImageIO that can crash apps or corrupt process memory.
An out-of-bounds access in media processing that could cause app termination or process memory corruption.
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.