CVE-2026-54998EPSS p48.1%

CVE-2026-54998CVE-2026-54998

microsoft / exchange_online

Description

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

Scoring

CVSS 8.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.65% probability of exploitation · percentile 48.1% · 2026-08-16T12:03:43Z
Last modified2026-07-07
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.