CVE-2021-2064

published 2021-01-20

CVE-2021-2064: Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core Components). The supported version that is affected is…

Priority P2 64 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core Components). The supported version that is affected is 12.1.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected

2 ranges

Vendor	Product	Version range	Fixed in
oracle	weblogic_server	—	—
oracle_corporation	weblogic_server	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → CVE-2021-2064 targets Oracle WebLogic Server 12.1.3.0.0 via the IIOP and T3 protocols; monitor for unauthenticated inbound connections on the default WebLogic T3/IIOP ports (7001, 7002) from external sources ↗
• → Restrict or block T3 and IIOP protocol access at the network perimeter for WebLogic Server 12.1.3.0.0 instances, as the vulnerability is remotely exploitable with no authentication required ↗
• → Successful exploitation results in full server takeover (C/I/A all HIGH); alert on any unexpected process spawning or outbound connections from the WebLogic JVM process following T3/IIOP traffic ↗

• · Only Oracle WebLogic Server version 12.1.3.0.0 is confirmed affected; other versions are not listed as vulnerable for this specific CVE ↗
• · The attack vector is network-based with no privileges or user interaction required, meaning any network-accessible WebLogic instance on 12.1.3.0.0 is at risk without additional mitigating controls ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

vendor_oracle 9.8 CRITICAL

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.