{"id":24992,"date":"2026-09-17T04:32:13","date_gmt":"2026-09-16T20:32:13","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-20242"},"modified":"2026-09-17T04:32:13","modified_gmt":"2026-09-16T20:32:13","slug":"cve-2026-20242","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-20242","title":{"rendered":"CVE-2026-20242 [CRITICAL] &#8211; A vulnerability in the External Database Access feature of Cisco Secure Firewall Managemen"},"content":{"rendered":"<p>A vulnerability in the External Database Access feature of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary commands as&nbsp;root on an affected device.<\/p>\n<p>This vulnerability is due to insecure deserialization of a user-supplied Java byte stream from a host that is configured in the external database access list. An attacker could exploit this vulnerability by sending a crafted, serialized Java byte stream to a specific TCP port of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges to root.<br \/>\nNotes:<\/p>\n<p>This vulnerability can be exploited only by an attacker who has control of a host in the external database access list.<br \/>\nIf the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A vulnerability in the External Database Access feature of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary commands as&nbsp;<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24992","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24992","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=24992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}