How severe is CVE-2015-1646?

CVE-2015-1646 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-1646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1646?

CVE-2015-1646 affects Microsoft Xml Core Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-1646?

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

When was CVE-2015-1646 published?

CVE-2015-1646 was published on 2015-04-14 and last updated on 2026-06-17.

CVE-2015-1646

CVE-2015-1646 is a medium-severity vulnerability in Microsoft Xml Core Services with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Xml Core Services
Published: 2015-04-14
Last modified: 2026-06-17

Description

Microsoft XML Core Services (aka MSXML) 3.0 allows remote attackers to bypass the Same Origin Policy and obtain sensitive information via a crafted DTD, aka "MSXML3 Same Origin Policy SFB Vulnerability."

Frequently asked questions

What is CVE-2015-1646?: Microsoft XML Core Services (aka MSXML) 3.0 allows remote attackers to bypass the Same Origin Policy and obtain sensitive information via a crafted DTD, aka "MSXML3 Same Origin Policy SFB Vulnerability."
How severe is CVE-2015-1646?: CVE-2015-1646 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-1646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1646?: CVE-2015-1646 affects Microsoft Xml Core Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-1646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-1646 published?: CVE-2015-1646 was published on 2015-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:xml_core_services:3.0:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Xml Core Services

CVE-2013-0007 — Critical (CVSS 9.3): Microsoft XML Core Services (aka MSXML) 4.0, 5.0, and 6.0 does not properly parse XML content, which allows remote…
CVE-2010-2561 — Critical (CVSS 9.3): Microsoft XML Core Services (aka MSXML) 3.0 does not properly handle HTTP responses, which allows remote attackers to…
CVE-2007-2223 — Critical (CVSS 9.3): Microsoft XML Core Services (MSXML) 3.0 through 6.0 allows remote attackers to execute arbitrary code via the…
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CVE-2016-0147 — High (CVSS 8.8): Microsoft XML Core Services 3.0 allows remote attackers to execute arbitrary code via a crafted web site, aka "MSXML…
CVE-2013-0006 — High (CVSS 8.8): Microsoft XML Core Services (aka MSXML) 3.0, 5.0, and 6.0 does not properly parse XML content, which allows remote…

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