Threats / Microsoft / CVE-2017-0210
CVE-2017-0210
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Internet Explorer vulnerability
Internet Explorer privilege escalation via improper cross-domain policy enforcement allows attackers to access sensitive information.
Verdict
Today item — known-exploited.
A privilege escalation flaw in Internet Explorer's cross-domain policy enforcement enables unauthorized information disclosure. Active exploitation in the wild demonstrates practical threat; moderate EPSS score reflects real-world attack feasibility.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
3 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-24).
Probability (EPSS)
EPSS 0.19522 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Internet Explorer. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious webpage that exploits Internet Explorer's cross-domain policy bypass to escalate my privileges.
Business
User browsers become vectors for unauthorized data access, compromising confidentiality of sensitive information.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I leverage the privilege escalation to access restricted resources or information normally protected by domain boundaries.
Business
Attackers gain unauthorized visibility into user data across security domains, eroding trust in browser isolation mechanisms.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05