FAQ
What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker who successfully exploited this vulnerability could gain administrator privileges.
MSRC compact vulnerability detail
CVE-2026-21530 · Windows Rich Text Edit Elevation of Privilege Vulnerability
Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.
Signals
Windows Rich Text Edit
Elevation of Privilege
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Less Likely
CWE
Patch Diff
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Resolved binary override
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Description
Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.
FAQ / Articles
FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition.
Windows Rich Text Edit Elevation of Privilege Vulnerability
Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.
FAQ
According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability? An authorized attacker must send a victim a malicious and specially crafted file and convince them to open it.