CVE-2026-21514 KEV
7.8
HIGH · CVSS 3.1 · EPSS 1.5% (pctl 74)
Patch first
On CISA KEV — known exploited in the wild, due 2026-03-03.
Description
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 1.54% — more likely to be exploited than 74% of all CVEs |
| Weakness | CWE-807 |
| On CISA KEV | yes — remediate by 2026-03-03 |
| Public exploit | none known |
| Published | 2026-02-10 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability |
|---|---|
| Added | 2026-02-10 |
| Due | 2026-03-03 |
| Vendor / product | Microsoft / Office |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | 365 apps |
| microsoft | office long term servicing channel |
References
→ the Explorer · watch your stack · NVD