Security readout for executives and security teams
Plain-English summary
CVE-2022-2420 is an unrestricted file upload issue in URVE Web Manager. If an attacker already has low-privileged access on the local network, they may be able to upload dangerous files through uploader.php, risking full confidentiality, integrity, and availability impact.
Executive priority
Treat this as a high-priority internal exposure. It is not shown as internet-wide or KEV-exploited, but unrestricted upload with high impact warrants rapid inventory, network restriction, and vendor follow-up.
Technical view
The issue affects _internal/uploader.php in URVE Web Manager and maps to CWE-434. The CVSS 3.1 score is 8.0 with adjacent-network access, low privileges, no user interaction, and high CIA impact. Sources do not identify affected versions, CPEs, or a confirmed patch.
Likely exposure
Exposure is most likely in organizations running URVE Web Manager on internal networks. Public sources do not provide version ranges, so asset inventory and vendor confirmation are required.
Exploitation context
The source bundle says an exploit was publicly disclosed and may be used. It does not show CISA KEV listing or confirmed active exploitation. Attack access is described as local-network adjacent and requiring low privileges.
Researcher notes
Evidence is incomplete on affected versions, patch availability, and exploit reliability. Use the CVSS vector and public disclosure status for triage, but avoid assuming active exploitation or specific remediated builds without vendor confirmation.
Mitigation direction
- Inventory URVE Web Manager deployments and owners.
- Restrict URVE Web Manager access to approved administration networks.
- Review vendor guidance for fixed versions or supported mitigations.
- Limit low-privileged accounts with access to the application.
- Increase monitoring for unexpected uploads or changed web files.
Validation and detection
- Confirm whether URVE Web Manager is deployed internally.
- Check whether _internal/uploader.php is reachable from non-admin network segments.
- Review application and web server logs for suspicious upload activity.
- Verify vendor patch status because no fixed version is cited.
- Document compensating controls for any unpatched 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-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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 lookupCVE-2022-2420 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
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:L/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:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/joinia/webray.com.cn/blob/main/URVE/URVE%20Web%20Manager%20uploader.php%20%20File%20upload%20vulnerability.mdCVE reference · x_refsource_MISC
- https://vuldb.com/?id.203903CVE reference · x_refsource_MISC
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.