{"id":64203,"date":"2025-08-21T00:09:46","date_gmt":"2025-08-21T00:09:46","guid":{"rendered":""},"modified":"2025-09-05T10:19:25","modified_gmt":"2025-09-05T16:19:25","slug":"cve-2025-53727-sql-server-vulnerability-leading-to-privilege-escalation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53727-sql-server-vulnerability-leading-to-privilege-escalation\/","title":{"rendered":"<strong>CVE-2025-53727: SQL Server Vulnerability Leading to Privilege Escalation<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability, classified under the identifier CVE-2025-53727, is a critical issue affecting SQL Server. It allows an attacker with authorized access to execute malicious SQL commands, a technique commonly known as SQL Injection, leading to privilege escalation over the network. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50240-sql-injection-vulnerability-in-nbcio-boot-v1-0-3\/\"  data-wpil-monitor-id=\"71928\">vulnerability poses a significant threat to organizations using SQL<\/a> Server as it might lead to potential system compromise or data leakage, causing severe damage to the integrity, confidentiality, and availability of the data.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53727<br \/>\nSeverity: High (8.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49691-heap-based-buffer-overflow-in-windows-media-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"72186\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-222759519\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>SQL Server | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55010-arbitrary-php-object-instantiation-in-kanboard-prior-to-version-1-2-47\/\"  data-wpil-monitor-id=\"77918\">versions prior<\/a> to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by manipulating the SQL queries executed by the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49759-sql-injection-vulnerability-in-sql-server-potentially-enabling-privilege-escalation-and-data-leakage\/\"  data-wpil-monitor-id=\"79143\">SQL Server<\/a>. An attacker with authorized access could insert or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26186-sql-injection-vulnerability-in-opensis-v-9-1\/\"  data-wpil-monitor-id=\"71980\">&#8220;inject&#8221; malicious SQL<\/a> code into user input fields or through network protocols that interact with the database. If the input is not properly sanitized or parameterized, the server may execute the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44960-ruckus-smartzone-os-command-injection-vulnerability\/\"  data-wpil-monitor-id=\"73757\">injected SQL command<\/a>, allowing the attacker to manipulate the database or retrieve sensitive data. This can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53499-critical-unauthorized-access-vulnerability-in-wikimedia-foundation-mediawiki-abusefilter-extension\/\"  data-wpil-monitor-id=\"72814\">unauthorized access<\/a>, data leakage, or even system compromise.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2161329735\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Here&#8217;s a conceptual example demonstrating how <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51535-sql-injection-vulnerability-in-austrian-archaeological-institute-s-openatlas\/\"  data-wpil-monitor-id=\"73975\">SQL Injection<\/a> might be carried out, using a simple HTTP request with a malicious payload:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/login HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nusername=admin&amp;password=&#039; OR &#039;1&#039;=&#039;1&#039; --<\/code><\/pre>\n<p>In this example, the attacker is attempting to bypass the login mechanism by <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36014-ibm-integration-bus-code-injection-vulnerability\/\"  data-wpil-monitor-id=\"72274\">injecting malicious SQL code<\/a> into the &#8216;password&#8217; field. If the server is <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47982-improper-input-validation-vulnerability-in-windows-storage-vsp-driver-leading-to-privilege-escalation\/\"  data-wpil-monitor-id=\"75529\">vulnerable and does not properly sanitize this input<\/a>, the SQL Server might interpret the query as &#8220;Return true if the username is &#8216;admin&#8217; OR &#8216;1&#8217; equals &#8216;1&#8217;. Since &#8216;1&#8217; always equals &#8216;1&#8217;, the query will return true, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44955-critical-vulnerability-in-ruckus-network-director-allows-jail-users-to-gain-root-access\/\"  data-wpil-monitor-id=\"76048\">allowing the attacker to login as the &#8216;admin&#8217; user<\/a> without knowing the actual password.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, it is highly recommended to apply the vendor&#8217;s patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method. Additionally, adopting good coding practices, such as input validation and parameterized queries, can significantly reduce the risk of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50341-sql-injection-vulnerability-in-axelor-5-2-4\/\"  data-wpil-monitor-id=\"74530\">SQL Injection<\/a> attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability, classified under the identifier CVE-2025-53727, is a critical issue affecting SQL Server. It allows an attacker with authorized access to execute malicious SQL commands, a technique commonly known as SQL Injection, leading to privilege escalation over the network. This vulnerability poses a significant threat to organizations using SQL Server as it might [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[76,74],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64203","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-privilege-escalation","attack_vector-sql-injection"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=64203"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64203\/revisions"}],"predecessor-version":[{"id":71553,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64203\/revisions\/71553"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=64203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=64203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=64203"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=64203"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=64203"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=64203"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=64203"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=64203"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=64203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}