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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Wed, 14 Oct 2026 22:05:01 +0000</lastBuildDate>
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      <title>CVE-2026-57026 — Junos OS: MX Series with SPC3, SRX Series: Processing of a specifically malformed SIP invite causes a flowd crash</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-57026</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Juniper Networks Junos OS&lt;/p&gt;
&lt;p&gt;An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered.&lt;/p&gt;
&lt;p&gt;This issue affects Junos OS on MX Series with SPC3 and SRX Series:&lt;/p&gt;
&lt;p&gt;*  all versions before 23.2R2-S7,
  *  23.4 versions before 23.4R2-S8,
  *  24.2 versions before 24.2R2-S5,
  *  24.4 versions before 24.4R2-S4,
  *  25.2 versions before 25.2R2,
  *  25.4 versions before 25.4R1-S2.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Juniper Networks Junos OS&lt;/p&gt;
&lt;p&gt;An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered.&lt;/p&gt;
&lt;p&gt;This issue affects Junos OS on MX Series with SPC3 and SRX Series:&lt;/p&gt;
&lt;p&gt;*  all versions before 23.2R2-S7,
  *  23.4 versions before 23.4R2-S8,
  *  24.2 versions before 24.2R2-S5,
  *  24.4 versions before 24.4R2-S4,
  *  25.2 versions before 25.2R2,
  *  25.4 versions before 25.4R1-S2.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2026-57026</guid>
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