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PatchSiren cyber security CVE debrief

CVE-2016-9563 SAP CVE debrief

CVE-2016-9563 is identified in the supplied records as an XML External Entity (XXE) vulnerability affecting SAP NetWeaver. CISA added it to the Known Exploited Vulnerabilities catalog, which indicates observed exploitation and makes it a priority for defensive remediation. The supplied KEV entry directs defenders to apply updates per vendor instructions.

Vendor
SAP
Product
NetWeaver
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Security teams responsible for SAP NetWeaver deployments, vulnerability management teams, patch coordinators, and incident responders tracking CISA KEV items.

Technical summary

The available corpus describes the issue as an XXE vulnerability in SAP NetWeaver. No CVSS score, affected-version list, or exploit details are included in the supplied materials. The strongest evidence in the corpus is CISA’s KEV listing, which marks the CVE as known exploited and references the NVD record for additional detail.

Defensive priority

High priority. A CISA KEV listing means this vulnerability should be treated as urgently actionable, even though the supplied record does not include CVSS data or affected-version specifics.

Recommended defensive actions

  • Confirm whether SAP NetWeaver is present in the environment and identify any exposed instances.
  • Follow vendor instructions to apply the relevant update or mitigation for CVE-2016-9563.
  • Use the CISA KEV catalog entry and the linked NVD/CVE records to validate remediation scope.
  • Track remediation to completion before the KEV due date if still applicable in your workflow.
  • If patching is delayed, apply compensating controls and document the risk acceptance path.

Evidence notes

Evidence is limited to the supplied official/public records. The CISA KEV metadata names the vulnerability as 'SAP NetWeaver XML External Entity (XXE) Vulnerability,' marks it as known exploited, and states 'Apply updates per vendor instructions.' The supplied timeline places the KEV date added at 2021-11-03 and due date at 2022-05-03. No CVSS score or affected-version details were provided in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-9563 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-9563

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

  • CVE-2016-9563 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-9563

    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.