Exploited CVEs / SAP / CVE-2016-9563

CVE-2016-9563

SAP NetWeaver XML External Entity (XXE) Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2022-05-03 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: SAP Security Patch Day, linked below.

Risk summary

MediumCISA KEV

6.5

CVSS base

24%

EPSS exploit probability

Medium

Severity

2021-11-03

Added to KEV

2022-05-03 (past due)

CISA due date

Actively exploited SAP NetWeaver vulnerability, Medium severity, CVSS 6.5. Added to the CISA KEV catalog 2021-11-03.

Senserva AI read on CVE-2016-9563 CISA required action Official fix for CVE-2016-9563 Admin questions

Senserva AI Opinion for CVE-2016-9563

SAP NetWeaver's BC-BMT-BPM-DSK component accepts XML external entities from authenticated remote users, enabling XXE attacks that typically read server files or pivot to internal systems. SAP platforms hold crown-jewel business data, which is why even a Medium Severity (CVSS 6.5) flaw here earned a CISA KEV entry. EPSS is 24 percent.

Do this: Apply the relevant SAP correction to NetWeaver AS Java systems and review which accounts can reach the BPM component.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2016-9563

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I run IT security. Facts for CVE-2016-9563, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2016-9563.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2016-9563: SAP NetWeaver XML External Entity (XXE) Vulnerability
- Affected: SAP NetWeaver
- Severity: Medium, CVSS 6.5; EPSS 30-day exploitation probability 24%
- Added to CISA KEV: 2021-11-03; federal remediation due 2022-05-03
- Ransomware-linked: no
- CISA required action: Apply updates per vendor instructions.
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

The fix ships from the vendor: SAP Security Patch Day.

Do this now: Federal remediation deadline 2022-05-03; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2016-9563

Published: 2021-11-03
Last revised: 2021-11-03
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

2021-11-03 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 6.5; EPSS first scored at 23.8%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2022-05-03 (past due).

Apply updates per vendor instructions.

Official fix for CVE-2016-9563

The authoritative fix and affected-version list are published by the vendor. Find the NetWeaver advisory on SAP Security Patch Day.

SAP Security Patch Day CISA KEV entry

Common questions about CVE-2016-9563

Is CVE-2016-9563 actively exploited?

Yes. CVE-2016-9563 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 24%.

What is the CISA deadline and required action for CVE-2016-9563?

CISA set the federal (BOD 22-01) remediation due date at 2022-05-03, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.

What fixes CVE-2016-9563?

The authoritative fix is in the vendor advisory: see SAP Security Patch Day for the patched NetWeaver versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2016-9563?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2016-9563's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

Scope and sources

More exploited SAP CVEs: CVE-2025-42999 CVE-2025-31324 CVE-2017-12637 CVE-2019-0344 CVE-2022-22536 CVE-2016-2386 CVE-2016-2388 CVE-2021-38163
All SAP exploited CVEs on one page: SAP vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.