CVE-2026-8931

{"id": "CVE-2026-8931", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8931", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-01T15:31:29.743050Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "incident@nbu.gov.sk", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.4, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "incident@nbu.gov.sk", "affectedData": [{"vendor": "Disig", "product": "Web Signer", "versions": [{"status": "affected", "version": "2.0.3", "versionType": "custom", "lessThanOrEqual": "2.5.3"}, {"status": "unaffected", "version": "2.5.5"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-01T15:16:39.220", "references": [{"url": "https://download.disigcdn.sk/cdn/products/websigner2/changelog.en.txt", "source": "incident@nbu.gov.sk"}, {"url": "https://download.disigcdn.sk/cdn/products/websigner2/changelog.sk.txt", "source": "incident@nbu.gov.sk"}, {"url": "https://qesportal.sk/Portal/en/Info/News#websigner255", "source": "incident@nbu.gov.sk"}, {"url": "https://qesportal.sk/Portal/sk/Info/News#websigner255", "source": "incident@nbu.gov.sk"}, {"url": "https://www.disig.sk/en/news/important-update-of-the-web-signer-application/", "source": "incident@nbu.gov.sk"}, {"url": "https://www.disig.sk/sk/aktuality/dolezita-aktualizacia-aplikacie-web-signer/", "source": "incident@nbu.gov.sk"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "A critical Remote Code Execution (RCE) vulnerability exists in Disig Web Signer versions 2.0.3 through 2.5.3."}, {"lang": "es", "value": "Existe una vulnerabilidad cr\u00edtica de ejecuci\u00f3n remota de c\u00f3digo (RCE) en las versiones 2.0.3 a 2.5.3 de Disig Web Signer."}], "lastModified": "2026-07-22T07:10:00.107", "sourceIdentifier": "incident@nbu.gov.sk"}