by Kastro
Paper/Archive/CVE-2026-84731

CVE-2026-84731

Nutanix Acropolis Operating System (AOS) — Pre-Authentication Admin Bypass and Remote Code Execution in Nutanix Prism Gateway inside AOS

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 70.0.700 × 2014.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Acropolis Operating System (AOS)< 7.3.1.187.3.1.18CNA
Acropolis Operating System (AOS)7.5 – < 7.5.27.5.2CNA
Acropolis Operating System (AOS)7.6 – < 7.6.0.87.6.0.8CNA

Scores by source

Nutanix (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Nutanix (CNA)9.3CVSS: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
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorydownload.nutanix.com/alerts/Security_Advisory_0058.pdfrefportal.nutanix.com/page/documents/list?type=software&filterKey=software&filterVal=AOSrefnutanix.com/support