CVE-2015-1646

Xml Core Services vulnerability

CVSS

4.3

EPSS

17.0%

EPSS pct

97th

Exploited

No known

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."

Affected vendor

Microsoft

Affected product

Xml Core Services

CVSS vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Weakness type (CWE)

CWE-264 — Permissions, Privileges, and Access Controls

Published

2015-04-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality.

Its EPSS score of 17.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2015-1646

Confirm whether Microsoft Xml Core Services is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-1646.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-1646

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-1646 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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