CVE-2026-21521

7.4 highEPSS 0.6%

High (7.4) in microsoft 365 word copilot. EPSS 0.6% chance of exploitation in the next 30 days.

Improper neutralization of escape, meta, or control sequences in Copilot allows an unauthorized attacker to disclose information over a network.

Severity

7.4 high

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-11-01)
CWE: CWE-150
Published: 2026-01-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19