SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-12256

rConfig 3.9.4 is vulnerable to reflected XSS.

MEDIUM 5.4EPSS 95.9%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 95.9%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

rConfig 3.9.4 is vulnerable to reflected XSS. The devicemgmnt.php file improperly validates user input. An attacker can exploit this by crafting arbitrary JavaScript in the deviceId GET parameter to devicemgmnt.php.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
95.94% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
rconfig/rconfig
Source
cve@mitre.org
EPSS trend
0%50%100%26 October 2026: 95.94%26 October 202626 October 2026

EPSS 95.9% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. 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.