Microsoft Outlook 2016 allows an attacker to obtain the email content of a user, due to how Outlook 2016 discloses user email content, aka…

published 2017-10-13 9y ago modified 2026-06-17 4mo ago also EUVD-2017-3384

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 9.4%; EPSS 9.4% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

Microsoft Outlook 2016 allows an attacker to obtain the email content of a user, due to how Outlook 2016 discloses user email content, aka "Microsoft Outlook Information Disclosure Vulnerability."

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11776 advisory

Is CVE-2017-11776 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

9.39% 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	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

Microsoft Corporation Microsoft Outlook

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2017-11776
patch, vendor-advisory
securityfocus.com /bid/101106
vdb-entry, third-party-advisory
securitytracker.com /id/1039542
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-11776
NVD CVE-2017-11776

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.