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CVE-2026-18313

medium CVSS 4.3 EPSS 0.2%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2026-18313 applies to, and the release that fixes it where the sources name one.

libpcap 1.10.5 fixed in 1.10.7

At a glance

Severity
Medium
CVSS base score
4.3 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.2% probability of exploitation in the next 30 days, higher than 12% of scored vulnerabilities
Weakness
CWE-401
Published
2026-09-05
NVD CVE.org

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