CVE-2026-18238CWE-126CWE-1288
CVE-2026-18238
Medium · published September 5, 2026
What it is
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.
The record
Technical detail
- CVSS v3.1
- 5.0 · MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- CVSS v4.0
- Not supplied
- EPSS
- 0.00179 · 7.1th percentile
- Weaknesses
- CWE-126 · Buffer Over-read; CWE-1288 · Improper Validation of Consistency within Input
- Published
- 2026-09-05T23:16Z
References (1)
EPSS history
Timeline