CVE-2016-3388
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to...
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to private namespaces, which allows remote attackers to gain privileges via unspecified vectors, aka "Microsoft Browser Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3387.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to private namespaces, which allows remote attackers to gain privileges via unspecified vectors, aka "Microsoft Browser Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3387.
- Record
CVE-2016-3388- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N - CVSS 2.0
- 2.6 Low
AV:N/AC:H/Au:N/C:N/I:P/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to private namespaces, which allows remote attackers to gain privileges via unspecified vectors, aka "Microsoft Browser Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3387.
- Record
CVE-2016-3388- Updated
- 2026-11-02
EUVDEUVD-2016-4416 No score
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to private namespaces, which allows remote attackers to gain privileges via unspecified vectors, aka "Microsoft Browser Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3387.
- Record
EUVD-2016-4416- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c7mr-44hx-9566
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to...
Microsoft Internet Explorer 10 and 11 and Microsoft Edge do not properly restrict access to private namespaces, which allows remote attackers to gain privileges via unspecified vectors, aka "Microsoft Browser Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3387.
- Record
GHSA-c7mr-44hx-9566- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft Windows Edge/Internet Explorer - Isolated Private Namespace Insecure DACL Privilege Escalation (MS16-118) | 2016-10-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-3388 is a medium vulnerability (CVSS 5.3) in Microsoft Edge, published October 14, 2016. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 27.6%, the 98th percentile. No source names a fixed version.
References
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-119
securitytracker.com/id/1036993
securityfocus.com/bid/93382
exploit-db.com/exploits/40606
nvd.nist.gov/vuln/detail/CVE-2016-3388
github.com/advisories/GHSA-c7mr-44hx-9566