major vulnerability· requires attention

Affects Microsoft Azure Portal, a widely used cloud management interface. XSS can lead to admin session theft and cloud account takeover, impacting many organizations.

Web

CVE-2026-83946

8.2

High

EPSS 0.32%Patch available

XSS in Azure Portal allows script execution and UI spoofing.

exploited

No known exploitation not in CISA KEV as of our last sync

fix

Patch available see the advisory in the references

likelihood

EPSS 0.32%top 75% of scored CVEs

Published 17 Sept 2026Analysed here 19 Sept 2026CVSS scored by the publisher (CNA)

common questions

Is CVE-2026-83946 being exploited?

Not confirmed. CVE-2026-83946 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.32% probability of exploitation in the next 30 days.

How severe is CVE-2026-83946?

CVE-2026-83946 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-83946?

Yes. A fix has been recorded for CVE-2026-83946. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-83946 affect?

CVE-2026-83946 affects Microsoft Azure Portal (portal.azure.com), Azure management web UI, Azure subscription/management consoles. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-83946?

Apply vendor patch ASAP; restrict Portal access, enforce MFA, rotate tokens, monitor admin sessions

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary

technical analysis

affected

Microsoft Azure Portal (portal.azure.com)Azure management web UIAzure subscription/management consoles

impact

Reflected/stored XSS in Azure Portal lets attackers run JS to steal session tokens, perform phishing, and potentially take over admin accounts.

action required

Immediate action required

cisa ssvc

exploitation: none
automatable: no
technical impact: partial

Assessed by CISA 18 Sept 2026 (SSVC 2.0.3).

timeline

17 Sept 2026Published
18 Sept 2026CISA SSVC assessment: exploitation none · 1 day later
19 Sept 2026Analysed by vulneraibility.com · 1 day later
31 Oct 2026CVE record last updated · 42 days later

how to fix

Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.

references

NVD CVE.org CVE Details Source

1 reference in the CVE record: 1 patch

Patchmsrc.microsoft.com /update-guide/vulnerability/CVE-2026-83946

sources

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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