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PatchSiren cyber security CVE debrief

CVE-2020-1938 Apache CVE debrief

CVE-2020-1938 is an Apache Tomcat vulnerability described as an improper privilege management issue and listed by CISA in the Known Exploited Vulnerabilities catalog. Because CISA has added it to KEV, defenders should treat it as a high-priority remediation item and apply vendor-directed updates without delay.

Vendor
Apache
Product
Tomcat
CVSS
CRITICAL 9.8
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

Organizations that run Apache Tomcat in any production, internet-facing, or privileged internal role should care most, especially teams responsible for server administration, patching, and exposure management.

Technical summary

The available source material identifies the issue as an improper privilege management vulnerability in Apache Tomcat. CISA's KEV listing means the vulnerability is considered known to be exploited, so systems running the affected Tomcat software should be reviewed promptly and updated according to vendor instructions.

Defensive priority

High. CISA added this CVE to KEV on 2022-03-03 and set a remediation due date of 2022-03-17, which indicates urgent patching expectations for affected environments.

Recommended defensive actions

  • Apply Apache's vendor-provided updates and remediation guidance as soon as possible.
  • Inventory all systems running Apache Tomcat to determine exposure.
  • Prioritize internet-facing and mission-critical Tomcat instances for immediate review.
  • Confirm patch status across development, staging, and production environments.
  • Monitor CISA KEV and vendor advisories for any follow-up guidance.

Evidence notes

This debrief is based only on the supplied CISA KEV source item and official resource links. The source identifies the product as Apache Tomcat, the issue as an improper privilege management vulnerability, and the record as a KEV entry with dateAdded 2022-03-03 and dueDate 2022-03-17. No additional impact details were asserted beyond the provided corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-1938 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-1938

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

  • CVE-2020-1938 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-1938

    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.