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      <title>CVE-2025-55293 — Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2025-55293</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; meshtastic firmware&lt;/p&gt;
&lt;p&gt;Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty publicKey first, then overwrite it with a new key. First sending a empty key bypasses &amp;#39;if (p.public_key.size &amp;gt; 0) {&amp;#39;, clearing the existing publicKey (and resetting the size to 0) for a known node. Then a new key bypasses &amp;#39;if (info-&amp;gt;user.public_key.size &amp;gt; 0) {&amp;#39;, and this malicious key is stored in NodeDB. This vulnerability is fixed in 2.6.3.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; meshtastic firmware&lt;/p&gt;
&lt;p&gt;Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty publicKey first, then overwrite it with a new key. First sending a empty key bypasses &amp;#39;if (p.public_key.size &amp;gt; 0) {&amp;#39;, clearing the existing publicKey (and resetting the size to 0) for a known node. Then a new key bypasses &amp;#39;if (info-&amp;gt;user.public_key.size &amp;gt; 0) {&amp;#39;, and this malicious key is stored in NodeDB. This vulnerability is fixed in 2.6.3.&lt;/p&gt;</content:encoded>
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