CVE-2026-55145
Low
No strong exploitation signal.
CVSS base
6.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
EPSS — probability of exploitation (30 days)
0.5%
43.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-77
Published 2026-07-14 · modified 2026-07-22
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | L | Low |
| Availability | N | None |
Timeline
- 2026-07-14 — Published (NVD)
- 2026-07-22 — Last modified (NVD)
Description
Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.