CVE-2026-66798
Low
No strong exploitation signal.
CVSS base
4.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
EPSS — probability of exploitation (30 days)
0.6%
45.2th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2026-08-28 · modified 2026-09-11
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | L | Low |
Timeline
- 2026-08-28 — Published (NVD)
- 2026-09-11 — Last modified (NVD)
Description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.