CVE-2026-20700 Apple Multiple Products: memory-safety flaw
In plain words: The program mishandles the memory it uses to keep track of data. A specially made input can scramble that memory. Usually lets an attacker crash the program or run their own code with its permissions.
Confirmed exploited by CISA on · US federal patch deadline Mar 5, 2026
What to do
- Install Apple's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic updates for the operating system and for Office, PDF and archive apps.
- Be careful with unexpected attachments — documents, .zip/.rar files and shortcuts are common bait.
- Use a normal (non-admin) account day to day and keep built-in protection like Microsoft Defender on.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Your files, saved passwords and accounts. Many of these let a program that is already running gain full administrator control.
The details
- Official name
- Apple Multiple Buffer Overflow Vulnerability
- Product
- Apple Multiple Products
- CISA description
- Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.
- Type of flaw
- Memory-safety flaw (CWE-119)
- Confirmed exploited
- Feb 12, 2026
- US federal patch deadline
- Mar 5, 2026
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Answering about CVE-2026-20700 ·
Questions about CVE-2026-20700
Is CVE-2026-20700 being exploited?
Yes. CISA added CVE-2026-20700 to its Known Exploited Vulnerabilities catalog on Feb 12, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-20700?
Install Apple's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic updates for the operating system and for Office, PDF and archive apps.
Am I affected by CVE-2026-20700?
Only if you use Apple Multiple Products. This one is aimed at devices or apps of the kind people own.