What is CVE-2016-3260?

CVE-2016-3260 is a high-severity vulnerability in Microsoft Edge, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-07-13.

How severe is CVE-2016-3260?

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

Buffer overflow in Microsoft Edge

CVE-2016-3260

The Microsoft (1) JScript 9, (2) VBScript, and (3) Chakra JavaScript engines, as used in Microsoft Internet Explorer 11, Microsoft Edge, and other products, 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."

Vulnerability class: Buffer Overflow

Published 2016-07-13 · 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: 0.231 (97.7th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.231 · newest: 0.231 · change: 0.000

Affected products

Microsoft Edge
Microsoft Internet Explorer — versions 11

Weakness classification (CWE)

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

References

www.securitytracker.com/id/1036283 (vdb-entry)
www.securityfocus.com/bid/91580 (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-2016-3260?: CVE-2016-3260 is a high-severity vulnerability in Microsoft Edge, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-07-13.
How severe is CVE-2016-3260?: High severity. CVSS v3 base score is 8.8 out of 10.