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CVE details

CVE-2026-121943

Irontec sngrep through 1.9.0 contains an out-of-bounds stack read vulnerability in sip_check_packet and sip_validate_packet caused by an off-by-one length check on 10240-byte SIP payloads. Remote attackers can send a crafted UDP or TCP SIP packet or supply a pcap file to crash sngrep or leak adjacent stack bytes into displayed SIP fields.

Score
6.3 medium
Published
2026-11-04
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
net/sngrepsngrep1.8.4unaddressedtad@vif.com

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Ranges per package from the CVE rows that match this port, in pkg notation with the port's epoch and revision, every bound checked with pkg; one range per epoch the port actually had. make newentry in security/vuxml creates the vid.

No CPE in the port Makefile

net/sngrep (CPE matched by the package name) has no USES=cpe. The CVE was matched through a CPE from another source, so the package and the version range may belong to a different product. Check the CVE record before using this entry.

  <vuln vid="FIXME (make newentry)">
    <topic>sngrep -- FIXME</topic>
    <affects>
      <package>
	<name>sngrep</name>
	<range><le>1.9.0</le></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>CVE-2026-121943: Irontec sngrep through 1.9.0 contains an out-of-
	  bounds stack read vulnerability in sip_check_packet and
	  sip_validate_packet caused by an off-by-one length check on
	  10240-byte SIP payloads. Remote attackers can send a crafted UDP or
	  TCP SIP packet or supply a pcap file to crash sngrep or leak
	  adjacent stack bytes into displayed SIP fields.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-121943</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-121943</url>
    </references>
    <dates>
      <discovery>2026-11-04</discovery>
      <entry>2026-11-04</entry>
    </dates>
  </vuln>