CVE-2018-2628
CriticalExploitedPublic exploitEasily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle WebLogic Server.
Published Apr 18, 2018 · Updated Oct 27, 2025
Key Facts
Patch immediately- CVE-2018-2628 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting WebLogic Server (Oracle).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2022. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2018-2628 brief as a PDF
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Description
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 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).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Sep 8, 2022 | Sep 29, 2022 | Not reported |
| Industry KEV feed | Sep 8, 2022 | Sep 29, 2022 | Not reported |
| CIRCL KEV | Sep 8, 2022 | Sep 29, 2022 | Not reported |
| ENISA EUVD | Sep 8, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
5 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WebLogic ServerOracle | 10.3.6.0.0, 12.1.3.0.0, 12.2.1.2.0, 12.2.1.3, >= 10.3.6.0 | n/a |
Timeline
Publicly disclosed
Apr 18, 2018
Added to CISA KEV
Sep 8, 2022
Added to Industry KEV feed
Sep 8, 2022
Added to CIRCL KEV
Sep 8, 2022
Added to ENISA EUVD
Sep 8, 2022
Last updated
Oct 27, 2025
Weakness Type
- CWE-502 Deserialization of Untrusted Data
References
- advisory103776
- advisory1040696
- patchhttp://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- exploitMSF weblogic_deserialize.rb
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Core Components).
Affected: WebLogic Server (Oracle) versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.2.0, 12.2.1.3, >= 10.3.6.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2022.
Yes. It was added on Sep 8, 2022 with a federal remediation due date of Sep 29, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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