CVE-2017-0149
HighExploitedPublic exploitMicrosoft 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…
Published Mar 16, 2017 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2017-0149 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Internet Explorer (Microsoft).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 14, 2017. Public exploit code is available.
- EPSS estimates a 29% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
29%
Higher than 98.1% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2017-0149 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | May 24, 2022 | Jun 14, 2022 | Not reported |
| Industry KEV feed | Mar 14, 2017 | Jun 14, 2022 | Not reported |
| CIRCL KEV | May 24, 2022 | Jun 14, 2022 | Not reported |
| ENISA EUVD | May 24, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet ExplorerMicrosoft | 10, 11, 9, >= Internet Explorer 9 through 11 | n/a |
Timeline
Added to Industry KEV feed
Mar 14, 2017
Publicly disclosed
Mar 16, 2017
Added to CISA KEV
May 24, 2022
Added to CIRCL KEV
May 24, 2022
Added to ENISA EUVD
May 24, 2022
Last updated
Apr 22, 2026
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisory96724
- advisory1038008
- patchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0149
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: Internet Explorer (Microsoft) versions 10, 11, 9, >= Internet Explorer 9 through 11. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 14, 2017.
Yes. It was added on May 24, 2022 with a federal remediation due date of Jun 14, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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