Out-of-bounds access in Apple CoreMedia audio stream processing
CVE-2026-20690 is an out-of-bounds access vulnerability in Apple CoreMedia affecting multiple Apple platforms, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Apple states the issue occurs when processing an audio stream in a maliciously crafted media file and was addressed with improved bounds checking. The available vendor description consistently characterizes the impact as process termination. Supporting third-party reporting further places the flaw in the CoreMedia framework and describes it as stemming from improper validation of user-supplied data during media parsing, resulting in an out-of-bounds memory access during handling of crafted audio 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
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CoreMedia out-of-bounds access vulnerability triggered by malicious audio streams in media files.
An out-of-bounds access vulnerability in audio stream processing that may terminate the process.
An out-of-bounds access vulnerability in macOS Sequoia that could terminate a process when handling a maliciously crafted media file audio stream.
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.