CVE-2003-1177: n/a vulnerability

CVE-2003-1177: Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause...

Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 02:19 UTC (UTC+00:00)

Security readout for executives and security teams

MERCUR Mailserver 4.2 before SP3a has a base64 decoder buffer overflow reachable through POP3 or IMAP authentication handling. A remote attacker could crash the mail service and may be able to execute code. This matters most where old MERCUR mail servers are still internet-facing or reachable by untrusted users. Exposure is likely limited to legacy MERCUR Mailserver 4.2 deployments before SP3a with POP3 or IMAP enabled, especially if those services are internet-facing. The bundle does not identify other affected products or supported current versions. Prioritize remediation for any exposed legacy MERCUR server. The business risk is service outage and possible server compromise, but urgency depends on whether this obsolete software is still deployed and reachable. Mitigation focus: Upgrade MERCUR Mailserver 4.2 to SP3a or later if still in use.; If no supported update exists, migrate away from the legacy mail server.; Restrict POP3 and IMAP access to trusted networks where possible..

Prepared: Jun 29, 2026, 21:50 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 10, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

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2Source links

CVSS and timeline data

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Source materials

CVE List V5 sourceCVE List V5
mercur-auth-command-dos(13468)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

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CWE details

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