Microsoft Excel 2016 Click-to-Run (C2R) allows an attacker to run arbitrary code in the context of the current user by failing to properly…

published 2017-11-15 8y ago modified 2026-06-17 4mo ago also EUVD-2017-3479

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 9.5%; EPSS 9.5% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

Microsoft Excel 2016 Click-to-Run (C2R) allows an attacker to run arbitrary code in the context of the current user by failing to properly handle objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11882.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11884 advisory

Is CVE-2017-11884 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

9.45% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

Microsoft Corporation Microsoft Office

Classification

Weakness

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

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2017-11884
patch, vendor-advisory
securitytracker.com /id/1039783
vdb-entry, third-party-advisory
securityfocus.com /bid/101766
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-11884
NVD CVE-2017-11884

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.