CVE Record
[ CRITICAL ]CVE-2021-38163
SAP NetWeaver Unrestricted File Upload Vulnerability
SAP NetWeaver contains a vulnerability that allows unrestricted file upload.
- Vendor
- SAP
- Product
- NetWeaver
- CVSS
- 9.9
- EPSS (exploit probability)
- 36.9%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2021-38163 being exploited?
Yes. CISA added CVE-2021-38163 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 36.9% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-19. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other SAP NetWeaver CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2025-42999 SAP NetWeaver Deserialization Vulnerabilityransomware use | [ CRITICAL ] | 9.1 | 12.7% | |
| CVE-2025-31324 SAP NetWeaver Unrestricted File Upload Vulnerabilityransomware use | [ CRITICAL ] | 10.0 | 99.5% | |
| CVE-2017-12637 SAP NetWeaver Directory Traversal Vulnerability | [ HIGH ] | 7.5 | 95.1% | |
| CVE-2016-2388 SAP NetWeaver Information Disclosure Vulnerability | [ MEDIUM ] | 5.3 | 52.2% | |
| CVE-2016-2386 SAP NetWeaver SQL Injection Vulnerability | [ CRITICAL ] | 9.8 | 71.5% | |
| CVE-2020-6287 SAP NetWeaver Missing Authentication for Critical Function Vulnerability | [ CRITICAL ] | 10.0 | 94.7% | |
| CVE-2016-9563 SAP NetWeaver XML External Entity (XXE) Vulnerability | [ MEDIUM ] | 6.5 | 24.2% | |
| CVE-2016-3976 SAP NetWeaver Directory Traversal Vulnerability | [ HIGH ] | 7.5 | 47.3% |