Kernel memory corruption in Apple Wi‑Fi (CVE-2026-20621)
Information currently not available to provide a detailed vulnerability description beyond the vendor advisory summary. Apple’s advisory states this is a Wi‑Fi component memory-handling issue that was addressed with improved memory handling, and that a malicious app may be able to cause unexpected system termination or corrupt kernel memory. Fixed in macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5/iPadOS 18.7.5, visionOS 26.3, and iOS 26.3/iPadOS 26.3.
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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
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Wi‑Fi component issue leading to system termination or kernel memory corruption.
Unknown (CVE listed without impact/description in provided content).
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.