How severe is CVE-2015-1631?

CVE-2015-1631 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-1631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1631?

CVE-2015-1631 primarily affects Microsoft Exchange Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1631?

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

When was CVE-2015-1631 published?

CVE-2015-1631 was published on 2015-03-11 and last updated on 2026-06-17.

CVE-2015-1631

CVE-2015-1631 is a medium-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 5.0. 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-284.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Microsoft Exchange Server
Published: 2015-03-11
Last modified: 2026-06-17

Description

Microsoft Exchange Server 2013 SP1 and Cumulative Update 7 allows remote attackers to spoof meeting organizers via unspecified vectors, aka "Exchange Forged Meeting Request Spoofing Vulnerability."

Frequently asked questions

What is CVE-2015-1631?: Microsoft Exchange Server 2013 SP1 and Cumulative Update 7 allows remote attackers to spoof meeting organizers via unspecified vectors, aka "Exchange Forged Meeting Request Spoofing Vulnerability."
How severe is CVE-2015-1631?: CVE-2015-1631 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-1631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1631?: CVE-2015-1631 primarily affects Microsoft Exchange Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-1631 published?: CVE-2015-1631 was published on 2015-03-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_7:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:*

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