Security readout for executives and security teams
Plain-English summary
CVE-2021-47858 is a stored cross-site scripting flaw in Genexis Platinum-4410 firmware 1.31A. Malicious script can be saved in a security-management address field and later run when privileged users open that page. This can expose or alter limited administrative-session data. Public exploit information exists, but the provided sources do not show active exploitation.
Executive priority
Treat as high priority where affected devices are internet-reachable or managed by many users. If devices are isolated and tightly administered, prioritize firmware verification and access controls during the next remediation cycle.
Technical view
The issue affects the Security Management interface start_addr parameter in Genexis Platinum-4410 P4410-V2-1.31A. It is classified as CWE-79 stored XSS, CVSS 3.1 score 7.2, AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N. The sources describe persistence and execution in privileged-user context; no vendor patch details are included.
Likely exposure
Most relevant to organizations or service providers managing Genexis Platinum-4410 devices running firmware 1.31A. Exposure is higher if the administrative interface is reachable from untrusted networks or shared with multiple operators.
Exploitation context
ExploitDB and VulnCheck list public exploit/advisory material, so defenders should assume the flaw is known. The source bundle does not indicate CISA KEV listing or confirmed in-the-wild exploitation.
Researcher notes
Evidence is limited to CVE metadata, VulnCheck, ExploitDB, and the Genexis product page. The CVSS vector says no user interaction, while the description says execution occurs when privileged users access the page. No patch, workaround, or vendor advisory is provided in the bundle.
Mitigation direction
- Check Genexis guidance for fixed firmware or supported replacement options.
- Restrict management-interface access to trusted administrative networks only.
- Limit router administrative accounts to necessary personnel.
- Review security-management entries for unexpected or suspicious stored content.
- If no fix is available, prioritize compensating controls and monitoring.
Validation and detection
- Inventory Genexis Platinum-4410 devices and record firmware versions.
- Confirm whether any device runs P4410-V2-1.31A.
- Verify management interfaces are not exposed to untrusted networks.
- Review administrative UI fields for unexpected script-like content.
- Monitor administrator sessions for unusual redirects or interface behavior.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-47858 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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:C/C:L/I:L/A:N3.92.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49709CVE reference · exploit
- Genexis Product PageCVE reference · product
- VulnCheck Advisory: Genexis Platinum-4410 P4410-V2-1.31A - 'start_addr' Persistent Cross-Site ScriptingCVE reference · third-party-advisory
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 Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.