Memory corruption via WebRTC out-of-bounds write
Published Sep 14, 2026 · Updated Sep 14, 2026
An out-of-bounds write in WebRTC across Safari and affected Apple platforms allows context-dependent attackers to corrupt memory. WebRTC writes beyond a buffer boundary while processing attacker-controlled content; Apple has not disclosed the vulnerable function or field. Exploitation requires processing crafted web content, and the published impact is memory corruption without a disclosed execution primitive.
Summary
What happened
An out-of-bounds write in WebRTC across Safari and affected Apple platforms allows context-dependent attackers to corrupt memory. WebRTC writes beyond a buffer boundary while processing attacker-controlled content; Apple has not disclosed the vulnerable function or field. Exploitation requires processing crafted web content, and the published impact is memory corruption without a disclosed execution primitive.
The record
- CVE
- CVE-2026-65391
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <26.6.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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