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CVE-2026-32661

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2949fcaaf5acce4c0e8ab385adcd1aa8f3098b61d39aab119fe7aa6b34d51074
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"GUARDIANWALL Mail Security Cloud (SaaS version)","vendor":"Canon Marketing Japan Inc.","versions":[{"status":"affected","version":"versions before the maintenance on April 30"},{"status":"affected","version":"2026"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/affected/1

{"product":"GUARDIANWALL MailSuite (On-premises version)","vendor":"Canon Marketing Japan Inc.","versions":[{"status":"affected","version":"Ver 1.4.00 to Ver 2.4.26"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/metrics/0/cvssV3_0

{"metric":{"baseScore":9.3,"baseSeverity":"CRITICAL","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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

2 source assertions
{"product":"GUARDIANWALL Mail Security Cloud (SaaS version)","vendor":"Canon Marketing Japan Inc.","versions":[{"status":"affected","version":"versions before the maintenance on April 30"},{"status":"affected","version":"2026"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/affected/1
{"product":"GUARDIANWALL MailSuite (On-premises version)","vendor":"Canon Marketing Japan Inc.","versions":[{"status":"affected","version":"Ver 1.4.00 to Ver 2.4.26"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/metrics/0/cvssV3_0
{"metric":{"baseScore":9.3,"baseSeverity":"CRITICAL","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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-121","description":"Stack-based buffer overflow","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://jvn.jp/en/jp/JVN35567473/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/references/1
{"url":"https://security-support.canon-its.jp/info_and_news/show/804?site_domain=GUARDIANWALL"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:30356a54bc642185f75d07611bf2a0c475f8ac06698f73f8f4d0417ad0c28b39 · sha256:878c74438e458f77… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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