`CVE-2018-2894` Oracle WebLogic Server

Affected software	Oracle WebLogic Server
Affected versions	12.1.3.0, 12.2.1.2, 12.2.1.3
Severity	9.8 Critical CVSS 3.0 2 scores
Fixed in	Oracle Critical Patch Update July 2018
Published	18 Jul 2018
Updated	13 Nov 2026

Description

Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS - Web Services). Supported versions that are affected are 12.1.3.0, 12.2.1.2 and 12.2.1.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Exploitation status

Exploited

Real-world exploitation reported by VulnCheck KEV. CISA has not confirmed it.

CISA KEV not listed
VulnCheck KEV listed Exploitation reported in the wild. 4 citations · honeypot sightings · 6 exploits · earliest 2019-01-08.
CISA Vulnrichment exploitation: none
Indexed PoC 5 indexed Published artifacts you can open, in GitHub PoC, Nuclei; first seen 2018-07-19.
EPSS 50% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99% of all scored CVEs.

VulnCheck KEV

Exploitation evidence from VulnCheck Known Exploited Vulnerabilities (VulnCheck KEV), used under VulnCheck's community terms. View CVE-2018-2894 in VulnCheck (free account), which lists 1 more exploit reference not shown here.

Evidence	Source	Detail	Date
Honeypot sighting	Shadowserver honeypots	Exploitation attempts seen on 754 days	2023-12-02 to 2026-11-12
Reported exploitation	lacework.com	/blog/elf-of-the-month-new-lucky-ransomware-sample	2019-01-08
Reported exploitation	fortinet.com	/blog/threat-research/closer-look-satan-ransomwares-propagation-technics	2019-05-20
Reported exploitation	web.archive.org	/web/20220227045141/https://risksense.com/wp-content/uploads/2019/09/RiskSense-Spotlight-Report-Ransomware.pdf	2019-09-01
Reported exploitation	go.recordedfuture.com	/hubfs/reports/cta-2024-0208.pdf	2024-02-08
Exploit reference	VulnCheck XDB b21374d905c8	Exploit type: initial-access	2018-07-19
Exploit reference	VulnCheck XDB 84f7f1a5d499	Exploit type: initial-access	2018-10-07
Exploit reference	VulnCheck XDB b0527dca19a9	Exploit type: initial-access	2023-12-21
Exploit reference	VulnCheck XDB b7bd8427f593	Exploit type: initial-access	2023-12-21
Exploit reference	VulnCheck XDB fefe091030d4	Exploit type: initial-access	2023-12-21

Evidence

Source

Detail

Date

Honeypot sighting

Shadowserver honeypots

Exploitation attempts seen on 754 days

2023-12-02 to 2026-11-12

Reported exploitation

lacework.com

/blog/elf-of-the-month-new-lucky-ransomware-sample

2019-01-08

Reported exploitation

fortinet.com

/blog/threat-research/closer-look-satan-ransomwares-propagation-technics

2019-05-20

Reported exploitation

web.archive.org

/web/20220227045141/https://risksense.com/wp-content/uploads/2019/09/RiskSense-Spotlight-Report-Ransomware.pdf

2019-09-01

Reported exploitation

go.recordedfuture.com

/hubfs/reports/cta-2024-0208.pdf

2024-02-08

Exploit reference

VulnCheck XDB b21374d905c8

Exploit type: initial-access

2018-07-19

Exploit reference

VulnCheck XDB 84f7f1a5d499

Exploit type: initial-access

2018-10-07

Exploit reference

VulnCheck XDB b0527dca19a9

Exploit type: initial-access

2023-12-21

Exploit reference

VulnCheck XDB b7bd8427f593

Exploit type: initial-access

2023-12-21

Exploit reference

VulnCheck XDB fefe091030d4

Exploit type: initial-access

2023-12-21

Index	Artifact	Stars	First seen
GitHub PoC	CVE-2018-2894 WebLogic Unrestricted File Upload Lead To RCE Check Script	138	2018-07-20
GitHub PoC	Ladon Scanner For Python, Large Network Penetration Scanner & Cobalt Strike, vulnerability / exploit / detection / MS17010/SmbGhost/CVE-2020-0796/CVE-2018-2894	53	2019-11-19
GitHub PoC	Weblogic,CVE-2018-2894	19	2018-10-07
GitHub PoC	cve-2018-2894 不同别人的利用方法。	15	2018-07-19
Nuclei	Oracle WebLogic Server - Remote Code Execution

Waratek protection

Protected by Waratek

Waratek has a rule that blocks the main way to exploit this vulnerability, but a public exploit or tool gets past it.

Protection partial Process
Action available security rule
Review human Researcher
Record active

Decided by	A researcher's recorded decision for this specific CVE
Finding	A researcher found this CVE partially protected by the ARMR Process rule: a public exploit or tool reaches the rated impact without tripping it.

Decided by

A researcher's recorded decision for this specific CVE

Finding

A researcher found this CVE partially protected by the ARMR Process rule: a public exploit or tool reaches the rated impact without tripping it.

Waratek research note

written 2026-11-13

Written by a Waratek engineer who reviewed this CVE. Their decision sets the status above, ahead of every automated rule except a withdrawal.

Comments

Rule Name: ARMR Process rule

File upload to webshell; blocks webshell commands that start a program (partial coverage: the upload itself, and a webshell that reads data directly in Java, are not stopped).

How to mitigate CVE-2018-2894

Apply the fix in Oracle Critical Patch Update July 2018. Until you can, Waratek RASP blocks the main way to exploit it with its process rule, but a public exploit or tool gets past it. The research note above says which.

Waratek RASP Runtime protection for Java applications

CVSS

9.8 CRITICAL v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 7.5 none AV:N/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.0	9.8	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	7.5	none	`AV:N/AC:L/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update July 2018 ↗	CPU	2018-Q3	Oracle Fusion Middleware / WLS - Web Services (12.1.3.0, 12.2.1.2, 12.2.1.3)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update July 2018 ↗

CPU

2018-Q3

Oracle Fusion Middleware / WLS - Web Services (12.1.3.0, 12.2.1.2, 12.2.1.3)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Fusion Middleware	WLS - Web Services	12.1.3.0, 12.2.1.2, 12.2.1.3	12.1.3.0 · 12.2.1.2 · 12.2.1.3

Family

Component

Versions, as Oracle lists them

Read as

Oracle Fusion Middleware

WLS - Web Services

12.1.3.0, 12.2.1.2, 12.2.1.3

12.1.3.0 · 12.2.1.2 · 12.2.1.3

Products and versions

1 product, 4 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	oracle	weblogic server	generic	10.3.6.0.0 · 12.1.3.0.0 · 12.2.1.2.0 · 12.2.1.3

Source

Vendor

Product

Scheme

Affected versions

nvd

oracle

weblogic server

generic

10.3.6.0.0 · 12.1.3.0.0 · 12.2.1.2.0 · 12.2.1.3

References

URL	Tags
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html	Patch, Vendor Advisory
http://www.securityfocus.com/bid/104763
http://www.securitytracker.com/id/1041301

URL

Timeline

Published	2018-07-18	By the CVE Program.
VulnCheck KEV: earliest evidence	2019-01-08	Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.
VulnCheck KEV: latest evidence	2026-11-12	Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.
Classification created	2026-11-13	First commit adding this CVE's research note.
Last VRT activity	2026-11-13	Most recent commit touching this CVE's classification, patch or rule file.

Published

2018-07-18

By the CVE Program.

VulnCheck KEV: earliest evidence

2019-01-08

Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

VulnCheck KEV: latest evidence

2026-11-12

Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.

Classification created

2026-11-13

First commit adding this CVE's research note.

Last VRT activity

2026-11-13

Most recent commit touching this CVE's classification, patch or rule file.

How VRT decided (4 of 24 rules ran)

4 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification decided it matched Protected by Waratek A researcher found this CVE partially protected by the ARMR Process rule: a public exploit or tool reaches the rated impact without tripping it.

5 manual classification not reached Manual classification of this CVE in the legacy dataset

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

NVD ↗ · CVE.org ↗