CVE-2003-1177
Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2003-1177- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2003-1177- Updated
- 2026-11-02
EUVDEUVD-2003-1167 No score
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.
- Record
EUVD-2003-1167- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q77f-7g38-65hw No score
Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote...
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.
- Record
GHSA-q77f-7g38-65hw- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Atrium Software Mercur MailServer 3.3/4.0/4.2 - IMAP AUTH Remote Buffer Overflow | 2003-10-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2003-1177 is a high vulnerability (CVSS 7.5) in Atrium Software Mercur Mailserver, published December 31, 2003. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 12.9%, the 96th percentile. No source names a fixed version.