CVE-2026-21521 describes an improper neutralization of escape sequences vulnerability in Microsoft 365 Word Copilot, allowing an unauthenticated attacker to disclose information over a network. With a CVSS score of 7.4 (HIGH), this vulnerability has a network attack vector and low attack complexity, requiring user interaction to achieve high confidentiality impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:microsoft:365_word_copilot:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.