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    <lastBuildDate>Mon, 28 Sep 2026 18:28:03 +0000</lastBuildDate>
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      <title>CVE-2026-89028 — MikroTik RouterOS &lt; 7.24 Heap Corruption via SMB1 SessionSetupAndX</title>
      <link>https://db.gcve.eu/vuln/cve-2026-89028</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MikroTik RouterOS&lt;/p&gt;
&lt;p&gt;MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MikroTik RouterOS&lt;/p&gt;
&lt;p&gt;MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.&lt;/p&gt;</content:encoded>
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