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PatchSiren cyber security CVE debrief

CVE-2022-26871 Trend Micro CVE debrief

CVE-2022-26871 is a Trend Micro Apex Central vulnerability described by CISA as an arbitrary file upload issue and included in the Known Exploited Vulnerabilities catalog. Because it is a KEV-listed issue, defenders should treat it as actively exploited risk and prioritize vendor remediation guidance. CISA’s due date for remediation was 2022-04-21.

Vendor
Trend Micro
Product
Apex Central
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-31
Original CVE updated
2022-03-31
Advisory published
2022-03-31
Advisory updated
2022-03-31

Who should care

Security and IT teams responsible for Trend Micro Apex Central, especially administrators managing internet-facing or broadly accessible management systems. Vulnerability management teams should also prioritize this CVE because it appears in CISA’s Known Exploited Vulnerabilities catalog.

Technical summary

The available official sources identify the issue as an arbitrary file upload vulnerability in Trend Micro Apex Central. CISA lists it in the Known Exploited Vulnerabilities catalog and directs affected organizations to apply updates per vendor instructions. No additional technical details are provided in the supplied source corpus beyond the vulnerability class and product name.

Defensive priority

High. CISA KEV inclusion indicates known exploitation and makes timely remediation a priority over routine patch queues.

Recommended defensive actions

  • Apply Trend Micro updates and follow vendor remediation instructions for Apex Central.
  • Verify whether any Apex Central instances are exposed or broadly reachable and restrict access where possible while remediation is underway.
  • Confirm the environment has no missed assets running affected Apex Central versions.
  • Track closure against CISA’s KEV due date context (2022-04-21) for historical governance and ensure the issue is not left unremediated in long-lived systems.
  • Review alerts, logs, and change history around Apex Central for unusual file upload activity or unauthorized administrative changes.

Evidence notes

This debrief is based only on official sources supplied in the corpus: CISA’s Known Exploited Vulnerabilities catalog entry, the CVE record, and the NVD detail page link. The source metadata identifies the issue as an arbitrary file upload vulnerability in Trend Micro Apex Central and marks it as a KEV item with dateAdded 2022-03-31 and dueDate 2022-04-21. The KEV metadata also lists knownRansomwareCampaignUse as Unknown. No exploit mechanics or additional impact details were used beyond what the supplied sources explicitly state.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-26871 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-26871

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

  • CVE-2022-26871 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-26871

    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.