High severity · published Aug 27, 2026
CVE-2026-75159
MongoDB BI Connector Improper Memory Handling During Failed Kerberos Authentication May Cause Process Termination
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until the process restarts.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
2.4.0 before 2.14.30 · source: vendor
BC
BI Connector · Mongodb
2.4.0 before 2.14.30 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75159
Vendor Advisory
https://www.mongodb.com/docs/bi-connector/current/release-notes/#mongodb-connector-for-bi-2.14.30
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