{"id":15328,"date":"2026-09-04T19:02:35","date_gmt":"2026-09-04T11:02:35","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2025-66390"},"modified":"2026-09-04T19:02:35","modified_gmt":"2026-09-04T11:02:35","slug":"cve-2025-66390","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2025-66390","title":{"rendered":"CVE-2025-66390 [CRITICAL] &#8211; In Microsoft Azure API Management through 2025-10-17, when self-service signup (username\/p"},"content":{"rendered":"<p>In Microsoft Azure API Management through 2025-10-17, when self-service signup (username\/password Basic Authentication) is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI level. In other words, disabling signup in the UI does not disable the underlying API endpoint (which still accepts cross-tenant requests based on the Host header). NOTE: The supplier states that they evaluated the report and determined it did not cross a security boundary (i.e., the observed behavior was a configuration\/state issue rather than an exploitable product vulnerability affecting tenant isolation). NOTE: The supplier evaluated this report and determined that it did not cross a security boundary (i.e., the observed behavior was a configuration\/state issue rather than an exploitable product vulnerability affecting tenant isolation).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Microsoft Azure API Management through 2025-10-17, when self-service signup (username\/password Basic Authentication) is enabled in Tenant A, an attacker can reuse the registration flow by changing <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15328","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}