Page generated: 09 Nov 2026, 06:22 UTC
← Dashboard

CVE-2023-21839

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 …

Read full description
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 7.5 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.5: +1.12
  • Fresh EPSS: 99.90%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 6 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

www.trendmicro.com
Press · 28 Jun 2024, 07:00 · Examining Water Sigbin's Infection Routine Leading to an XMRig Cryptominer - www.trendmicro.com
www.trendmicro.com
Press · 30 May 2024, 07:00 · Decoding Water Sigbin's Latest Obfuscation Tricks - www.trendmicro.com
SentinelOne
Press · 14 May 2024, 07:00 · CVE-2023-20052: ClamAV XXE Vulnerability - SentinelOne
SentinelOne
Press · 14 May 2024, 07:00 · CVE-2023-21839: Oracle WebLogic Server Core Patch Advisory - SentinelOne
EclecticIQ Blog
Press · 02 Jun 2023, 07:00 · Chinese Threat Actor Used Modified Cobalt Strike Variant to Attack Taiwanese Critical Infrastructure - EclecticIQ Blog
See all 6 source documents
Flashpoint.io
Press · 24 Feb 2023, 08:00 · What We Know About the New Oracle WebLogic Vulnerabilities - Flashpoint.io

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.6 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

3

Public exploit entries / repo candidates

See 3 repos with metrics
RepositoryStarsForksLanguageUpdated
houqe/POC_CVE-2023-21839194Python21 Apr 2023, 07:53
dinosn/CVE-2024-2118230Java02 Jun 2026, 14:11
Romanc9/Gui-poc-test20Java05 Dec 2023, 17:58
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.5; EPSS 99.9%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:49.717973+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
17 Jan 2023, 23:35
First press mention
24 Feb 2023, 08:00
Added to the CISA KEV catalog
01 May 2023, 00:00
Latest press mention
28 Jun 2024, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
3 repositories