Security readout for executives and security teams
This CVE concerns a reported high-impact file upload weakness in Liferay Portal 6.2.5. The score is critical, but the vendor disputes the report because the public reference does not prove unauthorized upload. Treat exposed legacy instances as urgent to review, not as confirmed compromised. Likely exposure is limited to organizations still running Liferay Portal 6.2.5, especially if internet-facing. The CVE metadata lists affected vendor and product as n/a, so asset confirmation is necessary before prioritizing remediation broadly. Prioritize discovery and exposure reduction for legacy Liferay systems. The rating is severe, but the dispute and incomplete affected metadata mean this should be handled as urgent validation rather than assumed confirmed compromise. Mitigation focus: Inventory any Liferay Portal 6.2.5 deployments.; Check current Liferay vendor guidance for fixes or configuration mitigations.; Restrict internet access to legacy Liferay administrative and file-management surfaces..
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
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ATT&CK lookup starting points
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CWE-78: Command execution behavior lookup
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Open ATT&CK lookupCVE-2021-33990 mapping review
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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://github.com/fu2x2000/Liferay_exploit_PocCVE 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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.