CVE-2025-66391
CWE-284Published: June 17, 2026· Updated: Jun 17, 2026
Official Description
In Citrix Cloud through 2025-11-10, an account with read-only access can trigger the beginning of a workflow for write operations, e.g., the system will send a one-time password to an attacker-controlled email address when the attacker attempts to reset the password of a user account.
Technical Analysis
CVE-2025-66391 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (3)
Quick Facts
Related CVEs (CWE-284)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-66391 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts