Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-84165— Lack of authorisation in OpenNebula by OpenNebula Systems

Quick assessment

Affected
OpenNebula Systems OpenNebula
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenNebula是OpenNebula社区开源的一个用于管理异构分布式数据中心基础架构的云计算平台。 OpenNebula 7.4之前版本存在权限许可和访问控制问题漏洞，该漏洞源于访问控制不当，导致具有基本权限的已认证用户可通过one.vm.exec函数在属于其他用户的虚拟机上执行命令，且无需正确验证访问权限，可能危害受影响虚拟机的机密性、完整性和可用性。

CVSS 8.7 · High EPSS 0.44% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenNebula Systems OpenNebula < 7.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-84165

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Lack of authorisation in OpenNebula by OpenNebula Systems
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability relating to incorrect access control in OpenNebula by OpenNebula Systems, affecting all versions prior to 7.4. This vulnerability could allow an authenticated user with basic permissions to execute commands on virtual machines belonging to other users via the `one.vm.exec` function, without proper verification of access permissions. To exploit the vulnerability, it is only necessary to know the virtual machine’s identifier and for qemu-agent to be enabled on that machine. Exploitation could allow commands to be executed and compromise the confidentiality, integrity and availability of the affected virtual machines.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenNebula 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenNebula是OpenNebula社区开源的一个用于管理异构分布式数据中心基础架构的云计算平台。 OpenNebula 7.4之前版本存在权限许可和访问控制问题漏洞，该漏洞源于访问控制不当，导致具有基本权限的已认证用户可通过one.vm.exec函数在属于其他用户的虚拟机上执行命令，且无需正确验证访问权限，可能危害受影响虚拟机的机密性、完整性和可用性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenNebula Systems OpenNebula 0 ~ 7.4 -

II. Public POCs for CVE-2026-84165

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-84165

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-84165 (1)

IV. Related Vulnerabilities

Same product: OpenNebula
Same weakness: CWE-284

V. Comments for CVE-2026-84165

No comments yet

Leave a comment