Vulnerability Report

CVE-2026-21530

Title: Double Free in Windows Rich Text Edit

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-21530.

CWE Category CWE-415

Published Date May 12, 2026

Modified Date May 14, 2026

Exploit Status Not Found

Score 6.7 CVSS v3.1

Exploit Probability (EPSS)

0.32%

Vulnerability Summary

CVE-2026-21530: Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.

Impacted Vendors

microsoft 14

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.7

Attack Vector

LOCAL

Complexity

HIGH

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-21530 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 14, 2026 MODIFIED

Vulnerability data updated via NVD.

May 13, 2026 MODIFIED

Vulnerability data updated via NVD.

May 12, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity HIGH

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.