# CVE-2015-4852: Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

- Exploited (CISA KEV): yes, added 2021-11-03
- Published: 2015-11-18
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 95.0% (100th percentile)
- CWE: CWE-502

The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic to TCP port 7001, related to oracle_common/modules/com.bea.core.apache.commons.collections.jar. NOTE: the scope of this CVE is limited to the WebLogic Server product.

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

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

### Google Cloud

- undated · listed · rule owasp-crs-v042200-id944120-java
  > Signature owasp-crs-v042200-id944120-java (sensitivity 1): Remote command execution: Java serialization (CVE-2015-4852)
  Source: https://docs.cloud.google.com/armor/docs/waf-rules
- undated · listed · rule owasp-crs-v042200-id944240-java
  > Signature owasp-crs-v042200-id944240-java (sensitivity 2): Remote command execution: Java serialization (CVE-2015-4852)
  Source: https://docs.cloud.google.com/armor/docs/waf-rules
- undated · listed · rule owasp-crs-v030301-id944120-java
  > Signature owasp-crs-v030301-id944120-java (sensitivity 1): Remote command execution: Java serialization (CVE-2015-4852)
  Source: https://docs.cloud.google.com/armor/docs/waf-rules
- undated · listed · rule owasp-crs-v030301-id944240-java
  > Signature owasp-crs-v030301-id944240-java (sensitivity 2): Remote command execution: Java serialization (CVE-2015-4852)
  Source: https://docs.cloud.google.com/armor/docs/waf-rules

"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-2015-4852 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2015-4852