VULNERABILITY INTELLIGENCE
CVE-2026-18238
CVSS score5 MEDIUM
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-09-05
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Description
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.
Weakness classification
- security@tcpdump.org: CWE-126