Actively exploitedCVSS 7.8 · HIGH

CVE-2026-33825

Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

View on NVD

Severity

Score: 7.8(HIGH)

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

AV: LOCAL

AC: LOW

PR: LOW

UI: NONE

S: UNCHANGED

C: HIGH

I: HIGH

A: HIGH

Weakness (CWE): CWE-1220

CISA KEV

Added to KEV: 2026-04-22

Federal patch deadline: 2026-05-06

Known ransomware use: Unknown

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS

Probability of exploitation (next 30 days): 0.0485 (4.9%)

Percentile: 89.6%

EPSS: 2026-05-06

Affects

microsoft:defender_antimalware_platform

Technical description

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

Published: 4/14/2026, 6:17:35 PM

Last modified: 4/23/2026, 7:05:04 PM

References

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.