CVE-2003-1177

critical

Description

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/13468

https://euvd.enisa.europa.eu/vulnerability/EUVD-2003-1167

http://www.securityfocus.com/bid/8889

http://www.securityfocus.com/bid/8861

http://www.securiteam.com/windowsntfocus/6U00N1P8KC.html

http://www.osvdb.org/2688

http://www.atrium-software.com/mail%20server/pub/mcr42sp3a.html

http://secunia.com/advisories/10038

http://archives.neohapsis.com/archives/fulldisclosure/2003-q4/1459.html

Details

Source: Mitre, NVD

Published: 2003-12-31

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.12925