What is CVE-2016-0199?

CVE-2016-0199 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-06-16.

How severe is CVE-2016-0199?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2016-0199 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Microsoft Internet Explorer

CVE-2016-0199

Microsoft Internet Explorer 9 through 11 allows 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," a different vulnerability than CVE-2016-0200 and CVE-2016-3211.

Vulnerability class: Buffer Overflow

Published 2016-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.510 (98.9th percentile), scored 2026-10-17.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.510 · newest: 0.510 · change: 0.000

Affected products

Microsoft Internet Explorer — versions 9, 10, 11

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

packetstormsecurity.com/files/137533/Microsoft-Internet-Explorer-11-Garbage-Col… (Exploit, VDB Entry, Third Party Advisory)
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-063 (vendor-advisory)
www.verisign.com/en_US/security-services/security-intelligence/vulnerability-re… (VDB Entry, Third Party Advisory, third-party-advisory)
www.exploit-db.com/exploits/39994/ (Exploit, VDB Entry, Third Party Advisory, exploit)
www.securityfocus.com/archive/1/538706/100/0/threaded (mailing-list)
www.securitytracker.com/id/1036096 (VDB Entry, Third Party Advisory, vdb-entry)
seclists.org/fulldisclosure/2016/Jun/44 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2016-0199?: CVE-2016-0199 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-06-16.
How severe is CVE-2016-0199?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2016-0199 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.