Vulnerability details

CVE-2026-84731

Nutanix Acropolis Operating System

Pre-Authentication Admin Bypass and Remote Code Execution in Nutanix Prism Gateway inside AOS

CVSS 4.0

9.3Critical

Official description

An unauthenticated remote attacker can bypass authentication and gain full access to administrative API endpoints in Nutanix Prism Element by including a crafted internal management HTTP header. The vulnerability is caused by a misconfiguration in the application's authentication filters. Consequently, the server responds with a Set-Cookie header containing a valid JSESSIONID. This session cookie decodes to a JSON Web Token (JWT) granting maximum cluster administrative privileges. Successful exploitation allows the attacker to execute root-level commands on all Controller VMs (CVMs) in the cluster, leading to complete cluster destruction and unauthorized access to VM memory and virtual disks.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (Nutanix)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/S:N/AU:Y/R:U/V:C/RE:H/U:Red`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (Nutanix)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
10.0High	2.0	CVEProject cvelistV5 (CNA) (Nutanix)	`AV:N/AC:L/Au:N/C:C/I:C/A:C`

Affected products

Vendor	Product	Versions	Source
Nutanix	Acropolis Operating System (AOS)	v < 7.3.1.18	CVEProject cvelistV5 (CNA)
Nutanix	Acropolis Operating System (AOS)	7.5 ≤ v < 7.5.2	CVEProject cvelistV5 (CNA)
Nutanix	Acropolis Operating System (AOS)	7.6 ≤ v < 7.6.0.8	CVEProject cvelistV5 (CNA)

References and advisories

https://download.nutanix.com/alerts/Security_Advisory_0058.pdf vendor-advisory
https://portal.nutanix.com/page/documents/list?type=software&filterKey=software&filterVal=AOS release-notes
https://www.nutanix.com/support x_support

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Details

Published: 2026-10-15
Last updated: 2026-10-15
State: Published
Assigner (CNA): Nutanix
Kolun priority: 32 · Low

Exploit prediction (EPSS)

1.28%

Probability of exploitation in 30 days

70.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-306
Missing authentication for critical function
CWE-290
Authentication bypass by spoofing
CWE-302
Authentication bypass by Assumed-Immutable data