CVE-2016-3210Internet Explorer Memory Corruption
The Microsoft (1) JScript and (2) VBScript engines, as used in Internet Explorer 11, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."
Published Jun 15, 2016 · Updated May 6, 2026
Key Facts
Patch immediately- CVE-2016-3210 is a high-severity vulnerability (CVSS 8.8 v3) affecting Internet Explorer (Microsoft).
- It is exploited in the wild, listed in Industry KEV feed since Aug 17, 2021. No public exploit code is known.
- EPSS estimates a 22% 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.
Scores
CVSS v3
8.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
45/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Aug 17, 2021
1889 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Description
The Microsoft (1) JScript and (2) VBScript engines, as used in Internet Explorer 11, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Aug 17, 2021 | n/a | Not reported |
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet ExplorerMicrosoft | 11 | n/a |
Timeline
Publicly disclosed
Jun 15, 2016
Added to Industry KEV feed
Aug 17, 2021
Last updated
May 6, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- exploitVulnCheck exploitation report
- otherMS16-063
- other91106
- other1036096
FAQ
Common Questions.
The Microsoft (1) JScript and (2) VBScript engines, as used in Internet Explorer 11, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."
Affected: Internet Explorer (Microsoft) versions 11. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Aug 17, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
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.
Is CVE-2016-3210 On Your Attack Surface?
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