{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-8979", "assignerOrgId": "7d092a75-6bbd-48c6-a15a-0297458009bc", "state": "PUBLISHED", "assignerShortName": "CyberDanube", "dateReserved": "2026-05-19T13:11:28.172Z", "datePublished": "2026-05-28T13:05:40.423Z", "dateUpdated": "2026-05-28T14:21:33.159Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "7d092a75-6bbd-48c6-a15a-0297458009bc", "shortName": "CyberDanube", "dateUpdated": "2026-05-28T13:15:22.499Z" }, "title": "Authentication Bypass", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-287", "description": "CWE-287 Improper Authentication", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-115", "descriptions": [ { "lang": "en", "value": "CAPEC-115 Authentication Bypass" } ] } ], "affected": [ { "vendor": "Mennekes", "product": "Amtron", "versions": [ { "status": "affected", "version": "0", "lessThanOrEqual": "5.22.3", "changes": [ { "at": "5.33.11-21500", "status": "unaffected" } ], "versionType": "custom" } ], "defaultStatus": "affected" } ], "descriptions": [ { "lang": "en", "value": "The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.
" } ] } ], "references": [ { "url": "https://cyberdanube.com/security-research/multiple-vulnerabilities-in-mennekes-amtron-series/" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "PROOF_OF_CONCEPT", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P" } } ], "credits": [ { "lang": "en", "value": "S. Eisenreich-Dietz (CyberDanube)", "type": "finder" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "references": [ { "url": "https://cyberdanube.com/security-research/multiple-vulnerabilities-in-mennekes-amtron-series/", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-05-28T14:21:09.524366Z", "id": "CVE-2026-8979", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-28T14:21:33.159Z" } } ] } }