CVE-2023-20900

A malicious actor that has been granted Guest Operation Privileges https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-security/GUID-6A952214-0E5E-4CCF-9D2A-90948FF643EC.html  in a target virtual machine may be able to elevate their privileges if that target virtual machine has been assigned a more privileged Guest Alias https://vdc-download.vmware.com/vmwb-repository/dcr-public/d1902b0e-d479-46bf-8ac9-cee0e31e8ec0/07ce8dbd-db48-4261-9b8f-c6d3ad8ba472/vim.vm.guest.AliasManager.html .

CVSS 3.1

7.5CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-25)

CWE

CWE-294

Published

2023-08-31

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• fedoraproject:fedora
• netapp:ontap_select_deploy_administration_utility
• vmware:open_vm_tools
• vmware:tools

References

• http://www.openwall.com/lists/oss-security/2023/08/31/1
• http://www.openwall.com/lists/oss-security/2023/10/27/1
• https://lists.debian.org/debian-lts-announce/2023/10/msg00000.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/

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