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PatchSiren cyber security CVE debrief

CVE-2016-8735 Apache CVE debrief

CVE-2016-8735 is recorded in the supplied corpus as an Apache Tomcat remote code execution vulnerability and is also listed in CISA’s Known Exploited Vulnerabilities catalog. For defenders, the practical takeaway is straightforward: treat it as a patch-now issue and follow vendor update guidance. The supplied source data does not provide a CVSS score, so prioritization here is driven by KEV status and the vendor’s remediation guidance rather than a numeric severity score.

Vendor
Apache
Product
Tomcat
CVSS
CRITICAL 9.8
CISA KEV
Listed
Original CVE published
2023-05-12
Original CVE updated
2023-05-12
Advisory published
2023-05-12
Advisory updated
2023-05-12

Who should care

Apache Tomcat administrators, application platform owners, vulnerability management teams, and incident response staff responsible for internet-facing Java application servers should prioritize this CVE.

Technical summary

The supplied records identify the issue as a remote code execution vulnerability affecting Apache Tomcat. CISA classifies it as a known exploited vulnerability and directs organizations to apply updates per vendor instructions. No additional technical details, affected-version data, or CVSS score are present in the supplied corpus, so the defensible summary is limited to confirmed product, impact class, and KEV status.

Defensive priority

High. CISA KEV inclusion means this vulnerability is treated as actively exploited and should be addressed on an urgent patching timeline, with remediation completed according to vendor guidance and the supplied due date of 2023-06-02.

Recommended defensive actions

  • Apply Apache Tomcat updates per vendor instructions.
  • Verify which Tomcat instances are deployed across production, staging, and externally reachable environments.
  • Prioritize remediation for any internet-facing or business-critical Tomcat servers.
  • Confirm patch completion and document the remediation status before the CISA KEV due date.
  • Review vulnerability management reports to ensure this CVE is tracked to closure.

Evidence notes

The supplied source item is CISA’s Known Exploited Vulnerabilities feed, which lists "Apache Tomcat Remote Code Execution Vulnerability" with required action "Apply updates per vendor instructions." The timeline fields supplied with this request record KEV date added as 2023-05-12 and due date as 2023-06-02. Official reference links supplied in the corpus are the CVE record, NVD detail page, and CISA KEV catalog. No CVSS score is provided in the supplied data.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-8735 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-8735

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

  • CVE-2016-8735 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-8735

    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.