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Fencer Vulns
high 7.8

CVE-2017-11882 kev+ ransomware in the critical feed json

Microsoft Office 2007 Service Pack 3, Microsoft Office 2010 Service Pack 2, Microsoft Office 2013 Service Pack 1, and Microsoft Office 2016…

published 2017-11-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3478

cvss
7.8
version 3.1, CNA
cisa kev
Exploited
added 2021-11-03, used in ransomware
epss
99.9%
EPSS 99.9% chance of exploitation in 30 days, percentile 99.9%
public exploits
2
Metasploit, Exploit-DB

Summary

Microsoft Office 2007 Service Pack 3, Microsoft Office 2010 Service Pack 2, Microsoft Office 2013 Service Pack 1, and Microsoft Office 2016 allow 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-2017-11884.

Patch / fix

cisa required action Apply updates per vendor instructions.

Timeline

  1. First public exploit (Metasploit exploit/windows/fileformat/office_ms17_11882)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
5 y ago
Patch by
2022-05-03 (4 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
Microsoft, Office
CISA name
Microsoft Office Memory Corruption Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1566.001 Spearphishing Attachment exploitation
  • T1059 Command and Scripting Interpreter primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

99.94% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/fileformat/office_ms17_11882 Microsoft Office CVE-2017-11882 metasploit exploit, manual rank, 2017-11-15
  • EDB-43163 Microsoft Office - OLE Remote Code Execution remote, 2017-11-20
  • 0patch.blogspot.com https://0patch.blogspot.com/2017/11/official-patch-for-cve-2017-11882-meets.html referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/embedi/CVE-2017-11882 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/unamer/CVE-2017-11882 referenced PoC, tagged "exploit" by a source, unverified
  • reversingminds-blog.logdown.com http://reversingminds-blog.logdown.com/posts/3907313-fileless-attack-in-word-without-macros-cve-2017-11882 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/rxwx/CVE-2017-11882 referenced PoC, tagged "exploit" by a source, unverified
  • researchcenter.paloaltonetworks.com https://researchcenter.paloaltonetworks.com/2017/12/unit42-analysis-of-cve-2017-11882-exploit-in-the-wild/ referenced PoC, tagged "exploit" by a source, unverified
  • 0patch.blogspot.com https://0patch.blogspot.com/2017/11/did-microsoft-just-manually-patch-their.html referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/0x09AL/CVE-2017-11882-metasploit referenced PoC, tagged "exploit" by a source, unverified
  • web.archive.org https://web.archive.org/web/20181104111128/https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/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

Sources

Fencer Vulns 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.