Web server request pattern consistent with Oracle WebLogic CVE-2020-14882 exploitation

Detects WebLogic console exploitation attempts by matching encoded traversal patterns in HTTP URI query strings.

FreeReviewedSigma · High · v5

Category: webserver
Author: Florian Roth (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2020-11-02
Updated: 2026-07-31

ATT&CK techniques

Initial Access

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule flags HTTP requests to WebLogic endpoints containing URL-encoded path traversal sequences targeting the console image and CSS paths. Attackers may use these crafted requests to reach unauthorized resources or trigger vulnerable behavior associated with CVE-2020-14882 attempts. Detection relies on webserver telemetry that records the full URI query string so the encoded traversal patterns can be matched.

Reporting behind it

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Web server request pattern consistent with Oracle WebLogic CVE-2020-14882 exploitation

Pivot detection · T1190 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

oracle-weblogic-exploitation-attempts-via-crafted-console-url-parameters-cve-202-85d466b0

title: Web server request pattern consistent with Oracle WebLogic CVE-2020-14882 exploitation
id: 4ef93ecf-6ed5-480d-b18a-866f36f64367
status: test
description: This rule flags HTTP requests to WebLogic endpoints containing URL-encoded path traversal sequences targeting the console image and CSS paths. Attackers may use these crafted requests to reach unauthorized resources or trigger vulnerable behavior associated with CVE-2020-14882 attempts. Detection relies on webserver telemetry that records the full URI query string so the encoded traversal patterns can be matched.
references:
  - https://isc.sans.edu/diary/26734
  - https://twitter.com/jas502n/status/1321416053050667009?s=20
  - https://twitter.com/sudo_sudoka/status/1323951871078223874
  - https://github.com/SigmaHQ/sigma/blob/master/rules-emerging-threats/2020/Exploits/CVE-2020-14882/web_cve_2020_14882_weblogic_exploit.yml
author: Florian Roth (Nextron Systems), Huntrule Team
date: 2020-11-02
modified: 2023-01-02
tags:
  - attack.t1190
  - attack.initial-access
  - cve.2020-14882
  - detection.emerging-threats
logsource:
  category: webserver
detection:
  selection:
    cs-uri-query|contains:
      - /console/images/%252E%252E%252Fconsole.portal
      - /console/css/%2e
  condition: selection
falsepositives:
  - Unknown
level: high
license: DRL-1.1
related:
  - id: 85d466b0-d74c-4514-84d3-2bdd3327588b
    type: derived

Convert

This rule as a query you can run. Uses no unlock credit.

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