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

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 describ

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
Microsoft Corporation	Internet Explorer	Internet Explorer 9 through 11

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-05-24. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

08Timeline

• Published: 2017-03-17T00:00:00.000Z
• Last modified: 2025-10-21T23:55:43.703Z
• Added to CISA KEV: 2022-05-24
• BOD 22-01 due: 2022-06-14

09References

• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0149
• www.securityfocus.com — http://www.securityfocus.com/bid/96724
• www.securitytracker.com — http://www.securitytracker.com/id/1038008