Security readout for executives and security teams
Plain-English summary
CVE-2021-38241 is a critical Ruoyi issue reported in versions before 4.6.1. The source description says remote attackers can run arbitrary code through unsafe deserialization tied to a weak Shiro framework cipher. Treat exposed Ruoyi deployments as high business risk, but confirm product/version details because the structured affected metadata is incomplete.
Executive priority
Prioritize immediate inventory and remediation for any exposed Ruoyi instance. The business risk is severe because the CVE allows unauthenticated remote code execution, but active exploitation is not established by the provided sources.
Technical view
The CVE describes CWE-502 deserialization in Ruoyi before 4.6.1, reachable remotely with no authentication or user interaction according to CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N. Impact is rated high for confidentiality, integrity, and availability. The record attributes the issue to weak cipher use in Apache Shiro integration.
Likely exposure
Likely exposure is any Ruoyi deployment earlier than 4.6.1, especially internet-facing systems using the Shiro framework path described by the CVE. The bundle’s affected vendor/product fields are n/a, so asset owners should validate against installed Ruoyi versions rather than relying on CPE matching.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle. A public reference is cited, but the bundle does not prove active exploitation. Because the issue is unauthenticated remote code execution with a 9.8 CVSS score, exposure should still be treated as urgent.
Researcher notes
The strongest source facts are Ruoyi before 4.6.1, CWE-502, weak Shiro cipher, and CVSS 9.8. The bundle lacks detailed affected CPEs, vendor advisory text, and verified exploitation evidence, so avoid broad claims beyond Ruoyi version exposure.
Mitigation direction
- Identify all Ruoyi deployments and record exact versions.
- Upgrade Ruoyi versions before 4.6.1 to 4.6.1 or later.
- Check Ruoyi and Shiro vendor guidance for configuration hardening.
- Restrict external access to affected deployments until remediated.
- Prioritize systems handling sensitive data or administrative workflows.
Validation and detection
- Confirm no production Ruoyi instance runs a version before 4.6.1.
- Verify internet-facing inventories include Ruoyi applications and related admin portals.
- Review Shiro-related configuration against vendor guidance.
- Check logs for unexplained execution, authentication, or deserialization errors.
- Document remediation evidence for each affected deployment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-38241 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.du1ge.com/archives/CVE-2021-38241CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.