How severe is CVE-2010-1690?

CVE-2010-1690 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2010-1690 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1690?

CVE-2010-1690 primarily affects Microsoft Exchange Server. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1690?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2010-1690 published?

CVE-2010-1690 was published on 2010-05-07 and last updated on 2026-06-16.

CVE-2010-1690

CVE-2010-1690 is a medium-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 7% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Exchange Server
Published: 2010-05-07
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2010-1690?: 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.
How severe is CVE-2010-1690?: CVE-2010-1690 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2010-1690 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1690?: CVE-2010-1690 primarily affects Microsoft Exchange Server. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1690?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1690 published?: CVE-2010-1690 was published on 2010-05-07 and last updated on 2026-06-16.

References

Affected products (19)

cpe:2.3:o:microsoft:windows_2000:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:-:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2003:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2003:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2003:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2007:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2007:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2007:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2010:-:*:*:*:*:*:*

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