# CVE-2022-22963: VMware Tanzu Spring Cloud Function Remote Code Execution Vulnerability

- Exploited (CISA KEV): yes, added 2022-08-25
- Published: 2022-04-01
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 99.9% (100th percentile)
- CWE: CWE-94

In Spring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions, when using routing functionality it is possible for a user to provide a specially crafted SpEL as a routing-expression that may result in remote code execution and access to local resources.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | Rule published | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Before feed history | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### Microsoft Azure

- undated · listed · rule 99001014
  > Rule 99001014: MS-ThreatIntel-CVEs · Attempted Spring Cloud routing-expression injection CVE-2022-22963 · Enable rule to prevent against SpringShell vulnerability
  Source: https://learn.microsoft.com/en-us/azure/web-application-firewall/afds/waf-front-door-drs
- undated · listed · rule 99001014
  > Rule 99001014: MS-ThreatIntel-CVEs · Attempted Spring Cloud routing-expression injection CVE-2022-22963 · Keep the rule enabled to prevent against SpringShell vulnerability
  Source: https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/application-gateway-crs-rulegroups-rules
- undated · listed · rule 800111
  > Rule 800111: Critical - 5 · PL2 · Attempted Spring Cloud routing-expression injection - CVE-2022-22963
  Source: https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/application-gateway-crs-rulegroups-rules

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2022-22963, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2022-22963, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2022-22963 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2022-22963