CVE-2026-18313
rpcapd can allocate up to 65536 bytes per each RPCAP_MSG_UPDATEFILTER_REQ or RPCAP_MSG_STARTCAP_REQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.3
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS probability
- 0.21%
- CWE
- CWE-401
- Published
- 2026-09-05
- Last modified
- 2026-09-08
Affected products
- The Tcpdump Group libpcap
- The Tcpdump Group libpcap
Weakness type
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