November 13, 2026

CVE Watchtower

CVE-2016-7191Microsoft Azure Active Directory Passport Improper Authentication

NVDCVSS scored by NVD (NIST)

Vulnerability Summary

The Microsoft Azure Active Directory Passport (aka Passport-Azure-AD) library 1.x before 1.4.6 and 2.x before 2.0.1 for Node.js does not recognize the validateIssuer setting, which allows remote attackers to bypass authentication via a crafted token.
Severity Level
HIGH(8.1)
Published Date
Sep 28, 2016
Last Modified
May 6, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
3.80%Probability
Root Weakness (CWE)
CWE-287: Improper Authentication β†—
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVSS v3.0 Base Metrics — Score 8.1 (HIGH)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Microsoft Azure Active Directory Passport
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Microsoft Azure Active Directory Passport and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Sep 28, 2016Published
  • May 6, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 21:28 UTC