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TI-2003-00458 Aliases CVE-2003-0487GHSA-v352-gc7j-mw97

Multiple buffer overflows in Kerio MailServer 5.6.3 allow remote authenticated users to…

Priority MEDIUM 46Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Multiple buffer overflows in Kerio MailServer 5.6.3 allow remote authenticated users to cause a denial of service and possibly execute arbitrary code via (1) a long showuser parameter in the do_subscribe module, (2) a long folder parameter in the add_acl module, (3) a long folder parameter in the list module, and (4) a long user parameter in the do_map module.

Why it matters now

EPSS 0.11369 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kerio:kerio_mailserver:5.6.3:*:*:*:*:*:*:*5.6.3VulnerableKerio
  • cpe:2.3:a:kerio:kerio_mailserver:5.6.3:*:*:*:*:*:*:* Versions 5.6.3 Vulnerable ·Kerio

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2003-0487
  2. 2026-10-03 Alias added: GHSA-v352-gc7j-mw97

References

Exploit 1

Other 1

  • TI-2008-00826 Unspecified vulnerability in the AVG plugin in Kerio MailServer before 6.5.0 has… CVSS 2.0HIGH 10.0
  • TI-2007-03870 Unspecified vulnerability in the attachment filter in Kerio MailServer before 6.4.1 has… CVSS 2.0HIGH 10.0
  • TI-2004-02311 Unspecified vulnerability in Kerio MailServer before 6.0.3 has unknown impact and unknown… CVSS 2.0HIGH 10.0
  • TI-2008-00824 Buffer overflow in the Visnetic anti-virus plugin in Kerio MailServer before 6.5.0 might… CVSS 2.0HIGH 7.5
  • TI-2006-01125 Kerio MailServer before 6.1.3 Patch 1 allows remote attackers to cause a denial of… CVSS 2.0HIGH 7.8
  • TI-2005-01000 The administration protocol for Kerio WinRoute Firewall 6.x up to 6.0.10, Personal… CVSS 2.0HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences