{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32661","assignerOrgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","state":"PUBLISHED","assignerShortName":"jpcert","dateReserved":"2026-05-11T00:11:34.095Z","datePublished":"2026-05-13T05:15:15.435Z","dateUpdated":"2026-05-13T10:49:48.622Z"},"containers":{"cna":{"affected":[{"vendor":"Canon Marketing Japan Inc.","product":"GUARDIANWALL MailSuite (On-premises version)","versions":[{"version":"Ver 1.4.00 to Ver 2.4.26","status":"affected"}]},{"vendor":"Canon Marketing Japan Inc.","product":"GUARDIANWALL Mail Security Cloud (SaaS version)","versions":[{"version":"versions before the maintenance on April 30","status":"affected"},{"version":"2026","status":"affected"}]}],"descriptions":[{"lang":"en","value":"Stack-based buffer overflow vulnerability exists in GUARDIANWALL MailSuite and GUARDIANWALL Mail Security Cloud (SaaS version). If a remote attacker sends a specially crafted request to the product's web service, arbitrary code may be executed when the product is configured to run pop3wallpasswd with grdnwww user privilege."}],"problemTypes":[{"descriptions":[{"description":"Stack-based buffer overflow","lang":"en-US","cweId":"CWE-121","type":"CWE"}]}],"references":[{"url":"https://security-support.canon-its.jp/info_and_news/show/804?site_domain=GUARDIANWALL"},{"url":"https://jvn.jp/en/jp/JVN35567473/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_0":{"version":"3.0","baseSeverity":"CRITICAL","baseScore":9.8,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV4_0":{"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:N/SI:N/SA:N"}}],"providerMetadata":{"orgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","shortName":"jpcert","dateUpdated":"2026-05-13T07:24:43.527Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T10:44:26.447129Z","id":"CVE-2026-32661","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-05-13T10:49:48.622Z"}}]}}