How severe is CVE-2017-0149?

CVE-2017-0149 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 29.2% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2017-0149: Microsoft Internet Explorer Memory Corruption

CISA Known Exploited Vulnerabilities

Microsoft Internet Explorer Memory Corruption Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-05-24

Remediation due

2022-06-14

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2017-0149

Description

Microsoft Internet Explorer 9 through 11 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability." This vulnerability is different from those described in CVE-2017-0018 and CVE-2017-0037.

Severity

CVSS 3.1 · CISA8.8 HIGH

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 15, 2026

All KEV statistics→

CISA added CVE-2017-0149 to the KEV catalog 1,894 days after its CVE record was published.
It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 166 added in 2022.
Its current EPSS score (29.2%) is higher than that of 41% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft Corporation	Microsoft Corporation Internet Explorer	Internet Explorer 9 through 11

References

3 Links

Vulnerability databases

Other references

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0149

Record Details

Published

2017-03-17

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

More from Microsoft

All Microsoft CVEs→

CVE-2010-39628.1 HIGH

Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability

KEVEPSS 96.8%2010-11-05

CVE-2016-01897.5 HIGH

Microsoft Internet Explorer Memory Corruption Vulnerability

KEVEPSS 94.1%2016-05-11

CVE-2010-02498.8 HIGH

Microsoft Internet Explorer Use-After-Free Vulnerability

KEVEPSS 91.9%2010-01-15

CVE-2013-38938.8 HIGH

Microsoft Internet Explorer Resource Management Errors Vulnerability

KEVEPSS 87.5%2013-09-18

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.