SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-21936

A specially-crafted HTTP request can lead to SQL injection.

HIGH 8.8EPSS 1.43%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A specially-crafted HTTP request can lead to SQL injection. An attacker can make authenticated HTTP requests to trigger this vulnerability at ‘health_alt_filter’ parameter. This can be done as any authenticated user or through cross-site request forgery.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.43% probability · 73th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-89
Affected
advantech/r-seenet
Source
talos-cna@cisco.com
EPSS trend
0%3%5%26 October 2026: 1.43%26 October 202626 October 2026

EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.