CVE-2026-21514 is a critical vulnerability in Microsoft Office Word and Microsoft 365 Apps that allows an attacker to bypass a security feature by relying on untrusted inputs. This flaw carries a CVSS score of 7.8 (High) due to its local attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. The vulnerability is actively exploited in the wild, as confirmed by its presence in the CISA KEV catalog, and has garnered significant community discussion and media coverage, despite a lack of public exploit code.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* | ||
2021CPE matchmatch criteria | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* | ||
2021CPE matchmatch criteria | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* | ||
2021CPE matchmatch criteria | cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.