CVE and update status of the FreeBSD ports tree3,864 unaddressed CVEs in 671 portsAll times are CET
CVE details

CVE-2026-55200

libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.

Score
9.2 critical
Published
2026-06-17
Links
NVD · cve.org

Matched ports (1)

PortPackageVersionStatusMaintainer
security/libssh2libssh21.11.1_1,3unaddressedsbz@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>libssh2</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds
	write vulnerability in ssh2_transport_read() that fails to enforce
	upper bounds on packet_length field. Remote attackers can send crafted
	SSH packets with excessively large packet_length values to corrupt
	heap memory and achieve remote code execution.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-55200</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-55200</url>
    </references>
    <dates>
      <discovery>2026-06-17</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>