CVE-2026-84003
CVSS v3
7.4
HIGH
EPSS Score
0.6 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.
Technical details
- Published
- 2026-09-08
- Last Modified
- 2026-09-08
Frequently asked questions
What is CVE-2026-84003?
Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.
Is CVE-2026-84003 actively exploited?
Active exploitation of CVE-2026-84003 has not been confirmed. Its EPSS score was 0.6% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-84003?
CVE-2026-84003 has a CVSS v3 base score of 7.4 (HIGH severity).
Is CVE-2026-84003 affecting your environment?
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