High severity · published Oct 13, 2026
CVE-2026-85891
Azure HDInsight Information Disclosure Vulnerability
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
Exposure of sensitive information to an unauthorized actor in Azure HDInsight allows an unauthorized attacker to disclose information over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AH
Azure HDInsight · Microsoft
1.0 before 2606012120 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85891
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85891
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85891
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