CVE-2017-0199 — Microsoft Office

As of 2025-10-22, CVE-2017-0199 is a HIGH-severity vulnerability in Microsoft Office, CVSS v3.1 7.8, EPSS 94.3% (99.9th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), with a US federal remediation deadline of 2022-05-03, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2017-0199, most recently “Remcos RAT Delivered via CVE-2017-0199 Phishing Campaign Impersonating Payment Confirmations”.

Last updated: 2025-10-22

What is CVE-2017-0199?

Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1, Microsoft Office 2016, Microsoft Windows Vista SP2, Windows Server 2008 SP2, Windows 7 SP1, Windows 8.1 allow remote attackers to execute arbitrary code via a crafted document, aka "Microsoft Office/WordPad Remote Code Execution Vulnerability w/Windows API."

The record classifies CVE-2017-0199 under weakness class NVD-CWE-noinfo. Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 11 affected-product entries are recorded, across 2 vendors, listed below. The identifier was first published 3441 days ago.

Severity and exploitation probability

CVSS v3.1 base score

7.8 — HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (FIRST)

94.3% probability of exploitation in the next 30 days, higher than 99.9% of all scored CVEs

CISA KEV

Listed since 2021-11-03, federal remediation deadline 2022-05-03 — used in known ransomware campaigns

Threadlinqs priority

10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum

Published

2017-04-12, last modified 2025-10-22

Is CVE-2017-0199 being exploited?

CISA added CVE-2017-0199 to the Known Exploited Vulnerabilities catalog on 2021-11-03, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2022-05-03 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. It currently carries a trending score of 50 in the Threadlinqs vulnerability feed.

Affected products and versions

• Microsoft: Office 2007, Office 2010, Office 2013, Office 2016, Windows 7, Windows Server 2008, Windows Server 2008 r2, Windows Server 2012, Windows Vista
• Philips: Intellispace Portal 7.0, Intellispace Portal 8.0

How to fix CVE-2017-0199

The record marks a vendor fix as available for CVE-2017-0199. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0199. Vendor advisory: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0199. Because CVE-2017-0199 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2022-05-03. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2017-0199

2 tracked threats in the Threadlinqs corpus reference CVE-2017-0199, either in the campaign’s CVE list or as an indicator on the campaign record.

• Remcos RAT Delivered via CVE-2017-0199 Phishing Campaign Impersonating Payment Confirmations — HIGH · 2026-07-13
• MuddyWater Operation Olalampo — Iran MOIS-Nexus APT Deploys New Malware Variants with Telegram Bot C2 Targeting Middle Eastern Governments and Critical Infrastructure — HIGH · 2026-02-28

Sources

Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

• rewtin.blogspot.nl
• securityfocus.com
• securitytracker.com
• blog.nviso.be
• ics-cert.us-cert.gov
• portal.msrc.microsoft.com
• exploit-db.com
• exploit-db.com (41934)
• exploit-db.com (42995)
• fireeye.com

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