CVE-2021-21801: This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applicat…
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 3 public reports, the first from .
- How likely is exploitation in the next 30 days?
- 63.4%
EPSS score, percentile 99.2 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 9.6 Critical
CVSS v3.0 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- Advantech R-SeeNet 2.4.12 (20.10.2020)
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an attacker and visited by a victim can lead to arbitrary JavaScript code execution.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (1 product)
| Status | Versions |
|---|---|
| Affected | Advantech R-SeeNet 2.4.12 (20.10.2020) |
Source: CVE List, as of . About the data.
Weakness
CWE-79
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |