CVE-2017-11882

Microsoft Office Memory Corruption

7.8 HIGHActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 99.9%

Published15 Nov 2017
Added to CISA KEV3 Nov 2021
Remediation due3 May 2022

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Microsoft Office2007 · 2010 · 2013 · 2016

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

http://reversingminds-blog.logdown.com/posts/3907313-fileless-attack-in-word-without-macros-cve-2017-11882ExploitThird Party Advisory
https://0patch.blogspot.com/2017/11/did-microsoft-just-manually-patch-their.htmlExploitThird Party Advisory
https://0patch.blogspot.com/2017/11/official-patch-for-cve-2017-11882-meets.htmlExploitPatchThird Party Advisory
https://github.com/0x09AL/CVE-2017-11882-metasploitExploitThird Party Advisory
https://github.com/embedi/CVE-2017-11882ExploitThird Party Advisory
https://github.com/rxwx/CVE-2017-11882ExploitThird Party Advisory
https://github.com/unamer/CVE-2017-11882ExploitThird Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11882PatchVendor Advisory
https://researchcenter.paloaltonetworks.com/2017/12/unit42-analysis-of-cve-2017-11882-exploit-in-the-wild/ExploitThird Party Advisory
https://web.archive.org/web/20181104111128/https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about/ExploitMitigationThird Party Advisory

and 5 more references

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2017-11882 being actively exploited?

Yes. CVE-2017-11882 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021. It has been used in ransomware campaigns.

How severe is CVE-2017-11882?

CVE-2017-11882 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 99.9% probability of exploitation.

Which products are affected by CVE-2017-11882?

Affected products include Microsoft Office.

How do I fix CVE-2017-11882?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2017-11882 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.