What is CVE-2016-3277?

CVE-2016-3277 is a medium-severity vulnerability in Microsoft Edge, classified under Information Disclosure. CVSS score: 5.3/10. Published 2016-07-13.

How severe is CVE-2016-3277?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Microsoft Edge

CVE-2016-3277

Microsoft Internet Explorer 10 and 11 and Microsoft Edge allow remote attackers to obtain sensitive information via a crafted web site, aka "Microsoft Browser Information Disclosure Vulnerability."

Vulnerability class: Information Disclosure

Published 2016-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.324 (98.3th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.324 · newest: 0.324 · change: 0.000

Affected products

Microsoft Edge
Microsoft Internet Explorer — versions 10, 11

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securityfocus.com/bid/91596 (vdb-entry)
www.securitytracker.com/id/1036283 (vdb-entry)
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-084 (vendor-advisory)
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-085 (vendor-advisory)

Frequently asked questions

What is CVE-2016-3277?: CVE-2016-3277 is a medium-severity vulnerability in Microsoft Edge, classified under Information Disclosure. CVSS score: 5.3/10. Published 2016-07-13.
How severe is CVE-2016-3277?: Medium severity. CVSS v3 base score is 5.3 out of 10.