{"id":75987,"date":"2025-09-19T02:58:04","date_gmt":"2025-09-19T02:58:04","guid":{"rendered":""},"modified":"2025-10-01T12:50:50","modified_gmt":"2025-10-01T18:50:50","slug":"cve-2025-21043-critical-libimagecodec-quram-so-out-of-bounds-write-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-21043-critical-libimagecodec-quram-so-out-of-bounds-write-vulnerability\/","title":{"rendered":"<strong>CVE-2025-21043: Critical libimagecodec.quram.so Out-of-bounds Write Vulnerability<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-21043 is a critical security vulnerability that has been identified in the libimagecodec.quram.so library. The vulnerability is of an &#8216;Out-of-bounds write&#8217; type, which allows remote attackers to execute arbitrary code on the compromised system. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27215-unauthorized-system-modification-vulnerability-in-unifi-display-cast-devices\/\"  data-wpil-monitor-id=\"84918\">vulnerability poses a significant threat to all systems<\/a> using the affected library versions prior to SMR Sep-2025 Release 1. Given the severity of the situation, it is crucial to understand this vulnerability, its potential impact, and the ways to mitigate it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-21043<br \/>\nSeverity: Critical (CVSS: 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22404-potential-system-compromise-due-to-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"85543\">System compromise<\/a>, potential data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2909864446\" 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>libimagecodec.quram.so | Prior to SMR Sep-2025 Release 1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability stems from an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43300-out-of-bounds-write-issue-in-macos-and-ios-resulting-in-memory-corruption\/\"  data-wpil-monitor-id=\"84401\">out-of-bounds write<\/a> error within the libimagecodec.quram.so library. An attacker can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8592-wordpress-inspiro-theme-vulnerability-to-cross-site-request-forgery-csrf\/\"  data-wpil-monitor-id=\"85449\">vulnerability by sending a specially crafted request<\/a> to an application using the affected library. This request triggers an out-of-bounds write, which can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-21125-serious-memory-corruption-vulnerability-leading-to-local-privilege-escalation\/\"  data-wpil-monitor-id=\"86047\">lead to memory corruption<\/a>. The attacker can leverage this corruption to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0074-critical-remote-code-execution-vulnerability-in-sdp-discovery\/\"  data-wpil-monitor-id=\"83654\">execute arbitrary code<\/a>, potentially gaining control over the system or leaking sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2939084534\" 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>Below is a conceptual example of how an attacker might exploit this vulnerability. This should give a sense of the potential risk, although actual exploitation would likely be more complex.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n&quot;malicious_payload&quot;: &quot;specially_crafted_data_that_triggers_out_of_bounds_write&quot;\n}<\/code><\/pre>\n<p><strong>Mitigation and Prevention<\/strong><\/p>\n<p>The most effective way to mitigate this vulnerability is to apply the vendor patch. The patch, released in SMR Sep-2025 Release 1, fixes the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49530-out-of-bounds-write-vulnerability-in-adobe-illustrator\/\"  data-wpil-monitor-id=\"86206\">out-of-bounds write<\/a> error, preventing potential exploits.<br \/>\nIn cases where immediate patching is not possible, organizations can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can detect and block suspicious requests, reducing the risk of successful exploitation. However, they should not be considered a long-term solution, as they might not catch all <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1740-excessive-authentication-attempts-vulnerability-in-akinsoft-myrezzta\/\"  data-wpil-monitor-id=\"86782\">attempts to exploit the vulnerability<\/a>, leaving systems at risk.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-21043 is a critical security vulnerability that has been identified in the libimagecodec.quram.so library. The vulnerability is of an &#8216;Out-of-bounds write&#8217; type, which allows remote attackers to execute arbitrary code on the compromised system. This vulnerability poses a significant threat to all systems using the affected library versions prior to SMR Sep-2025 Release 1. [&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":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-75987","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75987","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=75987"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75987\/revisions"}],"predecessor-version":[{"id":79622,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75987\/revisions\/79622"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=75987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=75987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=75987"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=75987"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=75987"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=75987"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=75987"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=75987"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=75987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}