CVE-2026-33843

criticalpriority · track · 39OT risk · elevatedEPSS 0.009 · 58 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.86% (58th) EPSS

CVSS 9.8 · critical

Is it mine?

5 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-24

Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.1criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · secure@microsoft.com USexploitability 3.9 · impact 5.2

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-288USCWE-288USCWE-288US

affected products (5)

Products and version ranges known to be affected.

Microsoft Azure Active Directory B2Call versionscert_bundDEcpe:/a:microsoft:azure:active_directory_b2c
Microsoft Microsoft Entraall versionsenisa_euvdEU
Microsoft Corp Microsoft Entra IDall versionsfstec_bduRU
Microsoft Microsoft Entra IDall versionsfixedmsrc_csafUS
microsoft entra idall versionsnvdUScpe:2.3:a:microsoft:entra_id:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1649Microsoft Azure: Mehrere SchwachstellenDeutsch2026-05-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Azure und Microsoft Azure Stack ausnutzen, um Informationen offenzulegen, erweiterte Privilegien zu erlangen oder beliebigen Code auszuführen.
msrc_CVE-2026-33843Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability2026-05-21csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf nvd NVD CVE.org MITRE

published 2026-05-22modified 2026-07-23

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan