{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121930", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-11-04T11:39:22.204Z", "datePublished": "2026-11-04T18:30:11.131Z", "dateUpdated": "2026-11-04T18:30:11.131Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-11-04T18:30:11.131Z"}, "title": "Linksys WRT54GL Ping Diagnostic apply.cgi system os command injection", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-78", "lang": "en", "description": "OS Command Injection"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-77", "lang": "en", "description": "Command Injection"}]}], "affected": [{"vendor": "Linksys", "product": "WRT54GL", "versions": [{"version": "4.30.18", "status": "affected"}], "cpes": ["cpe:2.3:h:linksys:wrt54gl:*:*:*:*:*:*:*:*"], "modules": ["Ping Diagnostic"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in Linksys WRT54GL 4.30.18. The affected element is the function system of the file apply.cgi of the component Ping Diagnostic. This manipulation of the argument ping_ip causes os command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 9.4, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P", "baseSeverity": "CRITICAL"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 9.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "CRITICAL"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 9.1, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "CRITICAL"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 8.3, "vectorString": "AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-11-04T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-11-04T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-11-04T12:44:47.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "liuyingqi (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/431042", "name": "VDB-431042 | Linksys WRT54GL Ping Diagnostic apply.cgi system os command injection", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/431042/cti", "name": "VDB-431042 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-121930", "name": "CVE-2026-121930 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/1024098", "name": "Submit #1024098 | Linksys WRT54GL 4.30.18 OS Command Injection (CWE-78)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Zimo-666/WRT54GL-cves/tree/main/CVE-TBD-ping-ip-command-injection", "tags": ["exploit"]}, {"url": "https://www.linksys.com/", "tags": ["product"]}], "tags": ["unsupported-when-assigned"], "x_generator": ["VulDB PVTS v202611"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:h:linksys:wrt54gl:*:*:*:*:*:*:*:*"], "modules": ["Ping Diagnostic"], "product": "WRT54GL", "vendor": "Linksys", "versions": [{"status": "affected", "version": "4.30.18"}]}], "source": "cna@vuldb.com"}], "cveTags": [{"sourceIdentifier": "cna@vuldb.com", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in Linksys WRT54GL 4.30.18. The affected element is the function system of the file apply.cgi of the component Ping Diagnostic. This manipulation of the argument ping_ip causes os command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer."}], "id": "CVE-2026-121930", "lastModified": "2026-11-04T19:17:33.087", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "MULTIPLE", "availabilityImpact": "COMPLETE", "baseScore": 8.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:M/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 6.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-11-04T19:17:32.883", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Zimo-666/WRT54GL-cves/tree/main/CVE-TBD-ping-ip-command-injection"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-121930"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/1024098"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/431042"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/431042/cti"}, {"source": "cna@vuldb.com", "url": "https://www.linksys.com/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.30.18"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WRT54GL", "source": "cna", "vendor": "Linksys"}, "product": "wrt54gl", "vendor": "linksys"}], "created": "2026-11-04T19:45:14.263922+00:00", "updated": "2026-11-04T19:45:14.490107+00:00", "vendors": ["linksys", "linksys$PRODUCT$wrt54gl"]}