CVE-2026-59118
Medium
Elevated severity or exploit probability.
CVSS base
9.3
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS — probability of exploitation (30 days)
0.5%
40.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-285
Published 2026-08-07 · modified 2026-08-11
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | C | Changed |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | N | None |
Timeline
- 2026-08-07 — Published (NVD)
- 2026-08-11 — Last modified (NVD)
Description
Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.