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CVE-2017-11826: Microsoft Office Remote Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2017-11826
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user.

CSIRTS triage

vendor: Microsoftproduct: OfficeRemote code execution
What
A remote code execution vulnerability exists in Microsoft Office when the software fails to properly handle objects in memory.
Who is affected
Users of Microsoft Office with the affected versions.
Urgency
Immediate action is required as the vulnerability is actively exploited and rated critical.
Action
Update Microsoft Office to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-11826

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2017-11826coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Office Remote

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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