CVE-2026-70096 Windows Rich Text Edit Control Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Rich Text Edit Control allows remote attackers to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70096?
CVE-2026-70096 is a critical memory corruption vulnerability in Microsoft 365 Apps for Enterprise, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2026-70096?
How do I fix CVE-2026-70096?
No fix has been published for CVE-2026-70096 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-70096 being exploited?
There is no known exploitation of CVE-2026-70096 in the wild and no public exploit code.
Sources
Also known as GHSA-4wmg-p3q7-xrh2.