The DNS implementation in smtpsvc.dll before 6.0.2600.5949 in Microsoft Windows 2000 SP4 and earlier, Windows XP SP3 and earlier, Windows Server 2003 SP2 and earlier, Windows Server 2008 SP2 and earlier, Windows Server 2008 R2, Exchange Server 2003 SP3 and earlier, Exchange Server 2007 SP2 and earlier, and Exchange Server 2010 does not verify that transaction IDs of responses match transaction IDs of queries, which makes it easier for man-in-the-middle attackers to spoof DNS responses, a different vulnerability than CVE-2010-0024 and CVE-2010-0025.
Conclusion & alert: CVE-2010-1690 is rated Moderate Risk (59.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 20.69%, 95th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-12-28 | 20.34% | 20.69% | +0.35% |
| 2 | 2025-12-27 | 20.69% | 20.34% | -0.35% |
| 3 | 2025-10-28 | — | 20.69% | — |
Full EPSS history (22 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_2000 | — | cpe:2.3:o:microsoft:windows_2000:-:sp1:*:*:*:*:*:* |
| microsoft | windows_2000 | — | cpe:2.3:o:microsoft:windows_2000:-:sp2:*:*:*:*:*:* |
| microsoft | windows_2000 | — | cpe:2.3:o:microsoft:windows_2000:-:sp3:*:*:*:*:*:* |
| microsoft | windows_2000 | — | cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:-:sp1:*:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:* |
| microsoft | windows_server_2003 | — | cpe:2.3:o:microsoft:windows_server_2003:-:sp1:*:*:*:*:*:* |
| microsoft | windows_server_2003 | — | cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:-:sp1:*:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* |
| microsoft | windows_server_2008 | r2 | cpe:2.3:o:microsoft:windows_server_2008:r2:-:*:*:*:*:*:* |
| microsoft | exchange_server | 2003 | cpe:2.3:a:microsoft:exchange_server:2003:-:*:*:*:*:*:* |
| microsoft | exchange_server | 2003 | cpe:2.3:a:microsoft:exchange_server:2003:sp1:*:*:*:*:*:* |
| microsoft | exchange_server | 2003 | cpe:2.3:a:microsoft:exchange_server:2003:sp2:*:*:*:*:*:* |
| microsoft | exchange_server | 2007 | cpe:2.3:a:microsoft:exchange_server:2007:-:*:*:*:*:*:* |
| microsoft | exchange_server | 2007 | cpe:2.3:a:microsoft:exchange_server:2007:sp1:*:*:*:*:*:* |
| microsoft | exchange_server | 2007 | cpe:2.3:a:microsoft:exchange_server:2007:sp2:*:*:*:*:*:* |
| microsoft | exchange_server | 2010 | cpe:2.3:a:microsoft:exchange_server:2010:-:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://archives.neohapsis.com/archives/fulldisclosure/2010-05/0058.html | Broken Link |
| http://securitytracker.com/id?1023939 | Third Party Advisory VDB Entry |
| http://www.coresecurity.com/content/CORE-2010-0424-windows-smtp-dns-query-id-bugs | Third Party Advisory |
| http://www.securityfocus.com/bid/39910 | Patch Third Party Advisory VDB Entry |