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CVE-2021-33990

48
FAUCET Score

CVE-2021-33990 describes a critical vulnerability in Liferay Portal 6.2.5, where specific requests (Command=FileUpload&Type=File&CurrentFolder=/) are permitted if frmfolders.html is present. This flaw carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. While the vendor disputes the exploitability of unauthorized file uploads, an ExploitDB entry (EDB-51244) suggests insecure permissions, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
6.2.5CPE matchmatch criteria
cpe:2.3:a:liferay:liferay_portal:6.2.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
11.92%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-51244 · Apr 5, 2023
This CVE's current EPSS score of 0.1192 is in the 91st percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/171701/Liferay-Portal-6.2.5-Insecure-Permissions.html
ExploitThird Party AdvisoryVDB Entry
github.com / fu2x2000/Liferay_exploit_Poc
ExploitThird Party Advisory