How severe is CVE-2015-2556?

CVE-2015-2556 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-2556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2556?

CVE-2015-2556 primarily affects Microsoft Sharepoint 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-2015-2556?

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

When was CVE-2015-2556 published?

CVE-2015-2556 was published on 2015-10-14 and last updated on 2026-06-17.

CVE-2015-2556

CVE-2015-2556 is a medium-severity vulnerability in Microsoft Sharepoint Server with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Sharepoint Server
Published: 2015-10-14
Last modified: 2026-06-17

Description

The InfoPath Forms Services component in Microsoft SharePoint Server 2007 SP3 and 2010 SP2 misparses DTDs, which allows remote attackers to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka "Microsoft SharePoint Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2015-2556?: The InfoPath Forms Services component in Microsoft SharePoint Server 2007 SP3 and 2010 SP2 misparses DTDs, which allows remote attackers to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka "Microsoft SharePoint Information Disclosure Vulnerability."
How severe is CVE-2015-2556?: CVE-2015-2556 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-2556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2556?: CVE-2015-2556 primarily affects Microsoft Sharepoint 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-2015-2556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2556 published?: CVE-2015-2556 was published on 2015-10-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:microsoft:sharepoint_server:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:*

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