High severity · published May 27, 2026
CVE-2026-9156
Tanium addressed a denial of service vulnerability in Tanium Server.
7.5
CVSS
0.2%
EPSS
No
On KEV
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)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TS
Tanium Server · Tanium
7.6.4.0 before 7.6.4.2190; 7.7.3.0 before 7.7.3.8274; 7.8.2.0 before 7.8.2.1176 · source: vendor
SE
Server · Tanium
7.6.4.0 before 7.6.4.2190; 7.7.3.0 before 7.7.3.8274; 7.8.2.0 before 7.8.2.1176 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9156
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9156
Vendor Advisory
https://security.tanium.com/TAN-2026-013
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