CVE-2026-5979

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The manipulation of the argument curTime results in buffer overflow. The attack can be launched remotely. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer."}, {"lang": "es", "value": "Una vulnerabilidad fue detectada en D-Link DIR-605L 2.13B01. Afectada por esta vulnerabilidad es la funci\u00f3n formVirtualServ del archivo /goform/formVirtualServ del componente Gestor de Solicitudes POST. La manipulaci\u00f3n del argumento curTime resulta en desbordamiento de b\u00fafer. El ataque puede ser lanzado remotamente. El exploit es ahora p\u00fablico y puede ser usado. Esta vulnerabilidad solo afecta a productos que ya no son soportados por el mantenedor."}], "id": "CVE-2026-5979", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "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": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.4, "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-5979", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-10T18:07:57.649061Z", "version": "2.0.3"}}]}, "published": "2026-04-09T21:16:13.967", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://lavender-bicycle-a5a.notion.site/D-Link-DIR-605L-formVirtualServ-33153a41781f80b496e1de206077bc7e?source=copy_link"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/791852"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/356533"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/356533/cti"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.dlink.com/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.13B01"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DIR-605L", "source": "cna", "vendor": "D-Link"}, "product": "dir-605l", "vendor": "d-link"}], "analysis": {"en": {"generated_at": "2026-04-09T22:53:39.801427+00:00", "value": {"mitigation_remediation": ["Check D\u2011Link\u2019s support site for a firmware update that fixes the formVirtualServ buffer overflow.", "If no update is available, restrict access to the /goform/formVirtualServ endpoint using network firewalls or web application filters to block or limit remote POST requests.", "Monitor device logs for anomalous POST traffic and investigate any suspicious activity."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability only affects the D\u2011Link DIR\u2011605L model running firmware 2.13B01. This generation is no longer supported by the vendor, meaning no official security updates are available for the exposed platforms.", "description_and_impact": "A buffer overflow exists in the formVirtualServ handler of the DIR\u2011605L\u2019s web interface. By sending a malicious POST request that exploits the curTime argument, an attacker can overwrite adjacent memory and trigger arbitrary code execution. The flaw is a classic buffer copy without bounds checks (CWE\u2011119) and buffer over\u2011write (CWE\u2011120), allowing complete control of the device.", "risk_and_exploitability": "The CVSS assessment of 8.7 places the issue in the high\u2011severity category, and documented public exploits demonstrate that the attack can be carried out remotely without authentication. While EPSS data is not provided, the confirmed exploitability and lack of vendor support significantly increase the risk of exploitation. The flaw is not listed in the CISA KEV catalog, but the combination of public exploitation and unsupported hardware makes immediate action critical."}}}}, "created": "2026-04-10T08:38:33.309723+00:00", "updated": "2026-04-10T09:29:17.239141+00:00", "vendors": ["d-link", "d-link$PRODUCT$dir-605l"]}