PatchSiren

PatchSiren cyber security CVE debrief

CVE-2017-11826 Microsoft CVE debrief

CVE-2017-11826 is identified by CISA as a Microsoft Office remote code execution vulnerability and is included in the Known Exploited Vulnerabilities catalog. The KEV entry calls for applying updates per vendor instructions, with a CISA remediation due date of 2022-03-24 in the supplied feed. No exploit details are included in this debrief.

Vendor
Microsoft
Product
Office
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Security teams responsible for Microsoft Office deployments, endpoint management, vulnerability remediation, and exposure tracking should prioritize this item because it appears in CISA’s Known Exploited Vulnerabilities catalog.

Technical summary

The supplied official sources characterize CVE-2017-11826 as a Microsoft Office remote code execution issue. CISA’s KEV metadata ties the finding to Microsoft Office, marks it as known exploited, and directs defenders to apply vendor updates. The corpus does not provide affected version ranges or attack-chain detail, so remediation should be driven by the vendor’s official guidance and validated against the CVE and NVD records.

Defensive priority

Urgent. CISA has listed this CVE in the Known Exploited Vulnerabilities catalog, so remediation should be treated as a high-priority patching item.

Recommended defensive actions

  • Apply Microsoft updates per vendor instructions as directed in the CISA KEV entry.
  • Verify that all Microsoft Office installations in scope are identified and included in remediation tracking.
  • Confirm patch status on endpoints and systems that can open or process Office documents.
  • Use the official CVE and NVD records to validate affected versions and remediation guidance.
  • Track closure against CISA KEV requirements and document completion for auditability.

Evidence notes

CISA’s KEV source item identifies vendorProject Microsoft, product Office, vulnerabilityName “Microsoft Office Remote Code Execution Vulnerability,” dateAdded 2022-03-03, dueDate 2022-03-24, and requiredAction “Apply updates per vendor instructions.” The source item also points to the NVD detail page for CVE-2017-11826. The supplied corpus does not include CVSS or version-specific technical details.

Sources and references

Verified primary and authoritative sources

  • CVE-2017-11826 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2017-11826

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2017-11826 NVD vulnerability detail

    Publisher, destination, and source semantics verified

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

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.