{"id":37301,"date":"2025-03-08T10:37:53","date_gmt":"2025-03-08T09:37:53","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=37301"},"modified":"2025-03-08T10:37:53","modified_gmt":"2025-03-08T09:37:53","slug":"over-37000-vmware-esxi-servers-vulnerable-via-cve-2025-22224","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2025\/03\/08\/over-37000-vmware-esxi-servers-vulnerable-via-cve-2025-22224\/","title":{"rendered":"Over 37,000 VMware ESXi servers vulnerable via CVE-2025-22224"},"content":{"rendered":"

\"Sicherheit[German<\/a>]This week, VMware by Broadcom has released security updates for various products, including VMware ESXi servers, to close security gaps. One vulnerability has already been exploited as a 0-day. Now The Shadowserver Foundation warns that over 37,000 VMware ESXi servers are vulnerable via CVE-2025-22224. Germany is also represented with several thousand installations.<\/p>\n

<\/p>\n

VMware security advisory and updates<\/h2>\n

\"\"VMware by Broadcom published a security advisory on March 4, 2025 to warn of three zero-day vulnerabilities CVE-2025-22224, CVE-2025-22225 and CVE-2025-22226). One of these vulnerabilities may have already been exploited in the wild and patching is strongly advised.<\/p>\n

According to the advisory VMSA-2025-0004<\/a>, the vulnerabilities affect VMware ESXi, Workstation and Fusion. The vulnerability CVE-2025-22224<\/a> in VMware ESXi (and Workstation) is a Time-of-Check Time-of-Use (TOCTOU) bug that leads to an out-of-bounds write. VMware has rated the severity of this issue as critical, with a maximum CVSSv3 base score of 9.3. I reported on the issue in the blog post0-day vulnerabilities in VMWare ESXi, Workstation and Fusion<\/a>.<\/p>\n

37,000 ESXi servers vulnerable via CVE-2025-22224<\/h2>\n

Now The Shadowserver Foundation warns that over 37,000 VMware ESXi servers are vulnerable to CVE-2025-22224. I became aware of this via the following post<\/a>.<\/p>\n

\"VMware<\/a><\/p>\n

According to The Shadowserver Foundation's website<\/a>, a search for the USA found around 3,800 unpatched VMware ESXi servers as of March 4, 2025.<\/p>\n

\"VMware<\/a><\/p>\n

I took a look at the following days – the number drops and then rises again until March 7, 2025. The curve of the patch status over time shown in the screenshot above for Europe also shows this dip.<\/p>\n

This is something that cannot really be explained logically. How can the number of vulnerable servers decrease briefly, only to increase again a day later? One explanation that comes to mind would be that the administrators took their VMware ESXi servers offline for a day after the warning from Broadcom.<\/p>\n","protected":false},"excerpt":{"rendered":"

[German]This week, VMware by Broadcom has released security updates for various products, including VMware ESXi servers, to close security gaps. One vulnerability has already been exploited as a 0-day. Now The Shadowserver Foundation warns that over 37,000 VMware ESXi servers … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[580,1547,22,1218],"tags":[2021,69,195,1710],"class_list":["post-37301","post","type-post","status-publish","format-standard","hentry","category-security","category-software","category-update","category-virtualization","tag-esxi","tag-security","tag-update","tag-vmware"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/comments?post=37301"}],"version-history":[{"count":1,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37301\/revisions"}],"predecessor-version":[{"id":37302,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/37301\/revisions\/37302"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=37301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=37301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=37301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}