CVE-2017-0210VulnerabilityPublished 05/24/2022Updated 10/24/2026

CVE-2017-0210: Microsoft Internet Explorer Privilege Escalation Vulnerability

Affects Microsoft Internet ExplorerSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/24/2022
KEV deadline: 06/14/2022
EPSS: 22.3% chance of exploitation in 30 days – higher than 97% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-0210 (opens in a new tab)

Description

CVE-2017-0210 is a privilege escalation vulnerability in Microsoft Internet Explorer caused by improper enforcement of cross-domain policies. This flaw could allow an attacker to access information across domains that should be restricted. The vulnerability has been exploited in the wild, indicating active threat use. No specific affected versions or patch information is provided in the available data.

Summary

This vulnerability arises from Internet Explorer's failure to properly enforce cross-domain policies, enabling privilege escalation by allowing unauthorized access to information across domain boundaries. It is identified as CVE-2017-0210 and has been confirmed to be exploited in real-world attacks. The lack of detailed version or patch information limits precise remediation guidance.

Impact

Successful exploitation could allow attackers to escalate privileges and access information that should be protected by cross-domain restrictions. This can lead to unauthorized data disclosure or further compromise of the affected system. The vulnerability has been observed in active exploitation campaigns.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until official fixes are confirmed, users should apply any available security updates from Microsoft for Internet Explorer and follow vendor recommendations.

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:42:29 UTC

References

Related threats