CVEs / CVE-2017-0149

CVE-2017-0149: Microsoft Internet Explorer Memory Corruption Vulnerability

Known exploited in the CISA KEV catalog since 24 May 2022
high 8.8 CVSS 3.1 (NVD)
EPSS 29.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.

Check your servers with Stackurity Already using Stackurity? Search for CVE-2017-0149

Summary

Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code or cause a denial-of-service (DoS) via a crafted website.
CISA, Known Exploited Vulnerabilities catalog

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.
The CVE record, via NVD · published 17 Mar 2017 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Microsoft Corporation Internet Explorer	Internet Explorer 9 through 11	—

Exploitation

In CISA KEV since	24 May 2022
Due date for US federal agencies	14 Jun 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	8.8 high `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-787

References

CVE-2017-0149 on NVD
CVE-2017-0149 in the CISA KEV catalog
http://www.securityfocus.com/bid/96724 Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038008 Broken Link, Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0149 Patch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-0149 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.