Security Resilience

CVE-2018-2628

RCE in Oracle Weblogic Server 10.3.6.0.0 … 12.2.1.3

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRCEDeserialization
Published
19 April 2018
Modified
27 October 2025
KEV Added
08 September 2022
Patch / advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.99 100.0th percentile
Risk Priority 97 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2018-2628 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Oracle Weblogic Server. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 0.0% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2018-2628 is a deserialization vulnerability in the WLS Core Components subcomponent of Oracle WebLogic Server within Oracle Fusion Middleware. It affects supported versions 10.3.6.0, 12.1.3.0, 12.2.1.2, and 12.2.1.3, and carries a CVSS 3.0 base score of 9.8 with full impacts to confidentiality, integrity, and availability.

An unauthenticated attacker with network access via the T3 protocol can exploit the flaw to achieve remote takeover of the Oracle WebLogic Server instance. The attack requires no user interaction and is rated as easily exploitable under the supplied CVSS vector.

The primary advisory reference is Oracle's April 2018 Critical Patch Update, which addresses the issue along with other Fusion Middleware vulnerabilities; additional references include SecurityFocus and SecurityTracker entries that point to the same Oracle remediation guidance.

Public exploit code for the issue is available on GitHub and Exploit-DB, indicating that proof-of-concept implementations have been shared since disclosure.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Core Components). Supported versions that are affected are 10.3.6.0, 12.1.3.0, 12.2.1.2 and 12.2.1.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle…

more

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).

CWE(s)
KEV Date Added
08 September 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-35300Same product: Oracle Weblogic Server
CVE-2018-3245Same product: Oracle Weblogic Server
CVE-2023-21839Same product: Oracle Weblogic Serverboth on KEV
CVE-2015-4852Same product: Oracle Weblogic Serverboth on KEV
CVE-2024-21182Same product: Oracle Weblogic Serverboth on KEV
CVE-2020-2555Same vendor: Oracleboth on KEV
CVE-2020-14750Same product: Oracle Weblogic Serverboth on KEV
CVE-2017-10271Same product: Oracle Weblogic Serverboth on KEV
CVE-2020-2883Same product: Oracle Weblogic Serverboth on KEV
CVE-2022-21445Same vendor: Oracleboth on KEV

Affected Assets

oracle
weblogic server
10.3.6.0.0, 12.1.3.0.0, 12.2.1.2.0, 12.2.1.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-502

Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.

addresses: CWE-502

Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.

addresses: CWE-502

Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.

addresses: CWE-502

Validates or rejects untrusted serialized data before deserialization occurs.

addresses: CWE-502

Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.

addresses: CWE-502

Integrity verification of serialized information can detect tampering before deserialization occurs.

addresses: CWE-502

Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-02 none match
blocks

PR.PS-02 addresses only post-deployment updates/patching and cannot prevent introduction of unsafe deserialization code, yet it can remediate some instances when the flaw exists in outdated libraries or components.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

removes
removes
removes
removes
removes

References