CVE-2026-21530

MEDIUM EPSS 23.7%
Published May 12, 20261mo ago · Modified Jun 17, 20261w ago
6.7 CVSS 3.1
Medium
Find Similar
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.

CVSS Details

Base Score
6.7
Exploitability
0.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
23.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-415

Affected Products 25

VendorProductVersionRange
microsoftwindows_10_1607* <10.0.14393.9140
microsoftwindows_10_1607* <10.0.14393.9140
microsoftwindows_10_1809* <10.0.17763.8755
microsoftwindows_10_1809* <10.0.17763.8755
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_11_23h2* <10.0.22631.7079
microsoftwindows_11_23h2* <10.0.22631.7079
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_25h2* <10.0.26200.8457
microsoftwindows_11_25h2* <10.0.26200.8457
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_server_2012*any
microsoftwindows_server_2012r2any
microsoftwindows_server_2016* <10.0.14393.9140
microsoftwindows_server_2019* <10.0.17763.8755
microsoftwindows_server_2022* <10.0.20348.5139
microsoftwindows_server_2022_23h2* <10.0.25398.2330
microsoftwindows_server_2025* <10.0.26100.32860

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21530
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.