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    <title>Most recent entries from all</title>
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    <lastBuildDate>Wed, 30 Sep 2026 01:11:43 +0000</lastBuildDate>
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      <title>CVE-2026-20242 — Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Execution Vulnerability</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-20242</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Cisco Secure Firewall Management Center (FMC)&lt;/p&gt;
&lt;p&gt;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&amp;amp;nbsp;root on an affected device.&#13;
&#13;
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.&#13;
Notes:&#13;
&#13;
This vulnerability can be exploited only by an attacker who has control of a host in the external database access list.&#13;
If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Cisco Secure Firewall Management Center (FMC)&lt;/p&gt;
&lt;p&gt;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&amp;amp;nbsp;root on an affected device.&#13;
&#13;
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.&#13;
Notes:&#13;
&#13;
This vulnerability can be exploited only by an attacker who has control of a host in the external database access list.&#13;
If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.&lt;/p&gt;</content:encoded>
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