{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18313","assignerOrgId":"cfdbb673-b408-4d03-89c1-c3d73ed80896","state":"PUBLISHED","assignerShortName":"Tcpdump","dateReserved":"2026-07-29T17:47:46.571Z","datePublished":"2026-09-05T18:51:32.438Z","dateUpdated":"2026-09-08T15:16:52.614Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","modules":["remote packet capture server"],"product":"libpcap","programFiles":["rpcapd/daemon.c"],"programRoutines":[{"name":"daemon_unpackapplyfilter()"}],"repo":"https://github.com/the-tcpdump-group/libpcap/","vendor":"The Tcpdump Group","versions":[{"status":"affected","version":"1.9.x"},{"lessThan":"1.10.7","status":"affected","version":"1.10.x","versionType":"semver"}]}],"configurations":[{"lang":"en","value":"The problem is specific to the remote packet capture code, which is not enabled in the default build configuration."}],"descriptions":[{"lang":"en","value":"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."}],"exploits":[{"lang":"en","value":"A functional exploit exists."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"cfdbb673-b408-4d03-89c1-c3d73ed80896","shortName":"Tcpdump","dateUpdated":"2026-09-05T18:51:32.438Z"},"references":[{"tags":["patch"],"url":"https://github.com/the-tcpdump-group/libpcap/commit/f9775af1a0ec76db60c7213241e6b48f1be10ac7"}],"solutions":[{"lang":"en","value":"Upgrade to libpcap 1.10.7."}],"source":{"discovery":"EXTERNAL"},"title":"rpcapd memory leak in libpcap before 1.10.7","x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T15:16:35.323875Z","id":"CVE-2026-18313","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-08T15:16:52.614Z"}}]}}