Is CVE-2017-0037 in the CISA KEV catalog?

Yes. CVE-2017-0037 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-28.

What is the CVSS severity of CVE-2017-0037?

CVE-2017-0037 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2017-0037?

CVE-2017-0037 has an EPSS score of 80.39% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2017-0037?

No published fix for CVE-2017-0037 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-04-18. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2017-0037

HIGHCISA KEVEPSS 100th pctl

8.1

CVSS v3

NVD

Description

Microsoft Internet Explorer 10 and 11 and Microsoft Edge have a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function in mshtml.dll, which allows remote attackers to execute arbitrary code via vectors involving a crafted Cascading Style Sheets (CSS) token sequence and crafted JavaScript code that operates on a TH element.

CWE-843Type Confusion

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-04-18

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

80.39%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Edge and Internet Explorer Type Confusion Vulnerability

Microsoft Edge and Internet Explorer have a type confusion vulnerability in mshtml.dll, which allows remote code execution.

Apply updates per vendor instructions.

Remediation due: 2022-04-18

References

Patch1

portal.msrc.microsoft.com

Exploit5

Third-Party Advisory3

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-843 (Type Confusion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-0611	High	8.8	99%	KEV	Fix
CVE-2012-0507	Critical	9.8	98%	KEV + Ransom	-
CVE-2017-8291	High	7.8	97%	KEV	Fix
CVE-2019-0752	High	7.5	82%	KEV + Ransom	-
CVE-2016-7201	High	8.8	80%	KEV	-
CVE-2020-6418	High	8.8	79%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.