CVE-2026-18238 (GCVE-0-2026-18238)
Vulnerability from cvelistv5
Published
2026-09-05 18:51
Modified
2026-09-08 15:17
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CWE
  • CWE-1288 - Improper Validation of Consistency within Input
  • CWE-126 - Buffer Over-read
Summary
The rpcap client code that processes a RPCAP_MSG_PACKET message received from the server incorrectly validates its headers. A malicious server can send a crafted message and cause the client to treat up to 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the captured packet.
References
Impacted products
Vendor Product Version
The Tcpdump Group libpcap Version: 1.8.x
Version: 1.9.x
Version: 1.10.x   ≤
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