SMTP service in (1) Microsoft Windows 2000 and (2) Internet Mail Connector (IMC) in…
Priority MEDIUM 53CWE-294Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-294.
Summary
SMTP service in (1) Microsoft Windows 2000 and (2) Internet Mail Connector (IMC) in Exchange Server 5.5 does not properly handle responses to NTLM authentication, which allows remote attackers to perform mail relaying via an SMTP AUTH command using null session credentials.
Why it matters now
EPSS 0.22438 97th percentileScored 2026-11-07
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:exchange_server:5.5:-:*:*:*:*:*:* | 5.5 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:5.5:sp1:*:*:*:*:*:* | 5.5 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:5.5:sp2:*:*:*:*:*:* | 5.5 sp2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:5.5:sp3:*:*:*:*:*:* | 5.5 sp3 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:5.5:sp4:*:*:*:*:*:* | 5.5 sp4 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_2000:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_2000:-:sp1:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_2000:-:sp2:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:exchange_server:5.5:-:*:*:*:*:*:* Versions 5.5 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:5.5:sp1:*:*:*:*:*:* Versions 5.5 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:5.5:sp2:*:*:*:*:*:* Versions 5.5 sp2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:5.5:sp3:*:*:*:*:*:* Versions 5.5 sp3 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:5.5:sp4:*:*:*:*:*:* Versions 5.5 sp4 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_2000:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_2000:-:sp1:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_2000:-:sp2:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-0054
- 2026-10-03 Alias added: GHSA-7h4w-2f9g-63r2
References
More Microsoft Exchange Server vulnerabilities
- TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2002-0054 · CVE Program
- CVE-2002-0054 · NVD
- FIRST EPSS
- GHSA-7h4w-2f9g-63r2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences