What is CVE-2017-11935?

CVE-2017-11935 is a high-severity vulnerability in Microsoft Office, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-12-12.

How severe is CVE-2017-11935?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Microsoft Office

CVE-2017-11935

Microsoft Office 2016 Click-to-Run (C2R) allows a remote code execution vulnerability due to the way files are handled in memory, aka "Microsoft Excel Remote Code Execution Vulnerability".

Vulnerability class: Buffer Overflow

Published 2017-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.189 (97.2th percentile), scored 2026-10-06.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.189 · newest: 0.189 · change: 0.000

Affected products

Microsoft Office — versions 2016
Microsoft Corporation Office — versions Microsoft Office 2016 Click-to-Run (C2R)

Weakness classification (CWE)

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

References

www.securitytracker.com/id/1039989 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/102067 (VDB Entry, Third Party Advisory, vdb-entry)
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11935 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-11935?: CVE-2017-11935 is a high-severity vulnerability in Microsoft Office, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-12-12.
How severe is CVE-2017-11935?: High severity. CVSS v3 base score is 7.8 out of 10.