CVE-2023-21839

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.999 · 100 %ileexploit · weaponizedDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 9 exploits · weaponized

Likely / severe?

99.9% (100th) EPSS

CVSS 7.5 · high

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2023-05-01remediate by 2023-05-22

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Oracle WebLogic Server Unspecified Vulnerability

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · secalert_us@oracle.com USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-20USCWE-306US

exploits (9)

Public proof-of-concept and weaponised exploit code.

exploit/multi/iiop/cve_2023_21839_weblogic_rceOracle Weblogic PreAuth Remote Command Execution via ForeignOpaqueReference IIOP Deserializationweaponized · metasploit
ASkyeye/CVE-2023-21839Weblogic CVE-2023-21839 RCE (无需Java依赖一键RCE)PoC · poc_in_github
DXask88MA/Weblogic-CVE-2023-21839DXask88MA/Weblogic-CVE-2023-21839PoC · poc_in_github
Firebasky/CVE-2023-21839CVE-2023-21839工具PoC · poc_in_github
Romanc9/Gui-poc-testA testing tool for CobaltStrike-RCE:CVE-2022-39197; Weblogic-RCE:CVE-2023-21839; MinIO:CVE-2023-28432PoC · poc_in_github
dinosn/CVE-2024-20931CVE-2024-20931, this is the bypass of the patch of CVE-2023-21839PoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

Oracle Fusion Middleware 12.2.1.3.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:12.2.1.3.0
Oracle Fusion Middleware 12.2.1.4.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:12.2.1.4.0
Oracle Fusion Middleware 14.1.1.0.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:14.1.1.0.0
Oracle Fusion Middleware 5.9.0.0.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:5.9.0.0.0
Oracle Fusion Middleware 6.4.0.0.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:6.4.0.0.0
Oracle Fusion Middleware 8.5.6all versionscert_bundDEcpe:/a:oracle:fusion_middleware:8.5.6
Oracle Corporation WebLogic Server≤ 14.1.1.0.0enisa_euvdEU
Oracle Corporation WebLogic Server≤ 12.2.1.4.0enisa_euvdEU
Oracle Corporation WebLogic Server≤ 12.2.1.3.0enisa_euvdEU
Oracle Corp. WebLogic Server≤ 14.1.1.0.0fstec_bduRU
Oracle Corp. WebLogic Server≤ 12.2.1.4.0fstec_bduRU
Oracle Corp. WebLogic Server≤ 12.2.1.3.0fstec_bduRU
oracle weblogic server= 12.2.1.3.0nvdUScpe:2.3:a:oracle:weblogic_server:*:*:*:*:*:*:*:*
oracle weblogic server= 12.2.1.4.0nvdUScpe:2.3:a:oracle:weblogic_server:*:*:*:*:*:*:*:*
oracle weblogic server= 14.1.1.0.0nvdUScpe:2.3:a:oracle:weblogic_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0132Oracle Fusion Middleware: Mehrere SchwachstellenDeutsch2023-01-17csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Fusion Middleware ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2023-01-18modified 2026-06-17

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+3739 more

references (10)

External citations — patches, advisories, analysis.

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