CVE-2018-2628
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).
- CVSS
- 9.8Criticalscored by CISA
- Exploited in the wild
- Yes, in CISA KEV since 8 Sept 2022CISA deadline for US federal agencies: 29 Sept 2022public exploit code
- EPSS
- > 99.9%chance of exploitation in the next 30 daystop 0.1% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 19 Apr 2018analysed here 12 Nov 2026
Do first. Apply updates per vendor instructions. (CISA's required action for this KEV entry)
Summary
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| Oracle Corporation WebLogic Server | 10.3.6.012.1.3.012.2.1.212.2.1.3Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- oracle:weblogic_server
Fix and mitigation
WAF and other mitigations
Can a WAF block it? Partly. Insecure deserialization payloads can be built from many different gadget chains, so WAF signatures only catch the known ones.
Also consider: allow-list classes · patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Listed since 8 Sept 2022.
- CISA due date
- 29 Sept 2022, the remediation deadline for US federal agencies
- CISA required action
- Apply updates per vendor instructions.
- Public exploit code
- Yes: 4 on Exploit-DB · 1 Metasploit module · 21 GitHub proofs of concept · 1 Nuclei template
- CISA SSVC
- exploitation active, automatable yes, technical impact totalAssessed by CISA 3 Oct 2024 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Exploit-DB
- Oracle Weblogic Server - Deserialization Remote Command Execution (Patch Bypass)remote, 25 Oct 2018
- Oracle Weblogic Server - Deserialization Remote Code Execution (Metasploit)remote, 13 Aug 2018, verified by Exploit-DB
- Oracle Weblogic Server - Deserialization Remote Code Execution (Metasploit)remote, 13 Aug 2018, verified by Exploit-DB
- Oracle Weblogic Server 10.3.6.0 / 12.1.3.0 / 12.2.1.2 / 12.2.1.3 - Deserialization Remote Command Executionremote, 22 Apr 2018, verified by Exploit-DB
Metasploit
- exploit/multi/misc/weblogic_deserializeexploit, rank manual
Nuclei
- Oracle WebLogic Server Deserialization - Remote Code Executiondetection template, critical
GitHub proofs of concept
- daybreak-kits/weblogicScanner2,080 stars
- tdy218/ysoserial-cve-2018-2628114 stars
- jas502n/CVE-2018-2628107 stars
- shengqi158/CVE-2018-262878 stars
and 17 more repositories
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 18 Apr 2018First public exploit or proof of concept
- 19 Apr 2018Published1 day later
- 8 Sept 2022Added to CISA KEV (exploited in the wild)1,603 days (about 4 years) later
- 29 Sept 2022CISA remediation due date (US federal agencies)21 days later
- 3 Oct 2024CISA SSVC assessment: exploitation active736 days (about 2 years) later
- 21 Oct 2025CVE record last updated383 days (about 1 year) later
- 12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Metric | Value | What it means |
|---|---|---|
| Attack vector | NetworkReachable over the internet or any routable network. | Reachable over the internet or any routable network. |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | NoneThe attacker needs no prior access. | The attacker needs no prior access. |
| User interaction | NoneNo victim action needed. | No victim action needed. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | HighTotal data disclosure possible. | Total data disclosure possible. |
| Integrity | HighComplete modification possible. | Complete modification possible. |
| Availability | HighFull outage possible. | Full outage possible. |
Common questions
Is CVE-2018-2628 being exploited?
Yes. CVE-2018-2628 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2018-2628?
CVE-2018-2628 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2018-2628?
Yes. A fix has been recorded for CVE-2018-2628. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2018-2628 affect?
CVE-2018-2628 affects oracle:weblogic_server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
8 references in the CVE record, grouped by the tags the record gives them.
Exploits (3)
- exploit-db.com /exploits/44553/
- exploit-db.com /exploits/46513/
- exploit-db.com /exploits/45193/
Other links (5)
- github.com /brianwrf/CVE-2018-2628
- securityfocus.com /bid/103776
- securitytracker.com /id/1040696
- oracle.com /technetwork/security-advisory/cpuapr2018-3678067.html
- cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-2628
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Exploit-DB: published exploits
- Metasploit Framework: exploit and scanner modules
- Nuclei templates: detection templates
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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