{"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": "2026-09-05T18:51:32.438Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "security@tcpdump.org"}], "cveTags": [], "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."}], "id": "CVE-2026-18313", "lastModified": "2026-09-05T19:16:55.590", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security@tcpdump.org", "type": "Secondary"}]}, "published": "2026-09-05T19:16:55.590", "references": [{"source": "security@tcpdump.org", "url": "https://github.com/the-tcpdump-group/libpcap/commit/f9775af1a0ec76db60c7213241e6b48f1be10ac7"}], "sourceIdentifier": "security@tcpdump.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "security@tcpdump.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.9.x"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[1.10.x,1.10.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "libpcap", "source": "cna", "vendor": "The Tcpdump Group"}, "product": "libpcap", "vendor": "tcpdump"}], "created": "2026-09-05T20:30:17.796631+00:00", "updated": "2026-09-07T08:24:55.938335+00:00", "vendors": ["tcpdump", "tcpdump$PRODUCT$libpcap"]}