These independent workarounds can be in place until an upgrade to a fixed release, or patch can be applied.
Note: Authentication Provider hash types can be viewed with isi auth file view System in the \"Password Hash Type\" entry.
Workaround 1:
Add the impacted users to the \"Users who cannot be modified\" list. For clusters that have not switched to SHA256 or SHA512 hash types:
isi auth file modify System --add-unmodifiable-users=compadmin,remotesupport,ese,insightiq,www,nobody,git_daemon,isdmgmt --remove-modifiable-users=compadmin,remotesupport,ese,insightiq,www,nobody,git_daemon,isdmgmt --restrict-modifiable=true
For clusters that have switched to SHA256 or SHA512 hash types: Add above users, but also include other file provider users with system privileges:
isi auth file modify System --add-unmodifiable-users=root,admin --remove-modifiable-users=root,admin --restrict-modifiable=true
Once the patch is applied, if you use the users, you can make them modifiable again.
Workaround 2:
For clusters that have not switched to SHA256 or SHA512 hash types. Set/reset password for users that are not blocked for modification in the System zone file provider, as well as disabling them.
Workaround 3:
Disable the WebUI and API via CLI
isi http services modify Platform-API-External --enabled=false
This does not completely mitigate the issue as it could still be abused by users with ISI_PRIV_LOGIN_CONSOLE or ISI_PRIV_LOGIN_SSH.
Workaround 4:
Limit access to API & WebUI to trusted networks via firewall rule
This does not completely mitigate the issue as it could still be abused by users with ISI_PRIV_LOGIN_CONSOLE or ISI_PRIV_LOGIN_SSH, as well as users on the IPs allowed through the firewall.
"}],"value":"These independent workarounds can be in place until an upgrade to a fixed release, or patch can be applied.\n\nNote: Authentication Provider hash types can be viewed with isi auth file view System in the \"Password Hash Type\" entry.\n\nWorkaround 1:\n\nAdd the impacted users to the \"Users who cannot be modified\" list. For clusters that have not switched to SHA256 or SHA512 hash types:\n\nisi auth file modify System --add-unmodifiable-users=compadmin,remotesupport,ese,insightiq,www,nobody,git_daemon,isdmgmt --remove-modifiable-users=compadmin,remotesupport,ese,insightiq,www,nobody,git_daemon,isdmgmt --restrict-modifiable=true\n\nFor clusters that have switched to SHA256 or SHA512 hash types: Add above users, but also include other file provider users with system privileges:\n\nisi auth file modify System --add-unmodifiable-users=root,admin --remove-modifiable-users=root,admin --restrict-modifiable=true\n\nOnce the patch is applied, if you use the users, you can make them modifiable again.\n\nWorkaround 2:\n\nFor clusters that have not switched to SHA256 or SHA512 hash types. Set/reset password for users that are not blocked for modification in the System zone file provider, as well as disabling them. \n\n * compadmin, remotesupport, ese, insightiq, www, nobody, git_daemon, isdmgmt\n\n\nWorkaround 3:\n\nDisable the WebUI and API via CLI\n\nisi http services modify Platform-API-External --enabled=false\n\nThis does not completely mitigate the issue as it could still be abused by users with ISI_PRIV_LOGIN_CONSOLE or ISI_PRIV_LOGIN_SSH.\n\nWorkaround 4:\n\nLimit access to API & WebUI to trusted networks via firewall rule\n\n * Enable the firewall\n * In \"default_pools_policy\" modify \"rule_isi_webui\" to restrict \"source network\" to a trusted set of networks/IPs\n\n\nThis does not completely mitigate the issue as it could still be abused by users with ISI_PRIV_LOGIN_CONSOLE or ISI_PRIV_LOGIN_SSH, as well as users on the IPs allowed through the firewall."}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-27690","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-04-11T03:55:25.684034Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-26T18:28:28.144Z"}}]}}