CVE-2020-12259Public exploitNetwork attack vector

Authenticated script execution via unsanitized rid parameter

Published May 18, 2020 · Updated Aug 4, 2024

Reflected XSS in rConfig 3.9.4 allows remote authenticated users to execute JavaScript through a crafted rid query parameter. configDevice.php reflects the rid value from an HTTP GET request into its response without neutralizing script markup. Exploitation requires low-privileged access and a victim to load the crafted response, exposing browser-session data or actions.

CVSS severity5.4
Medium
EPSS probability96.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in rConfig 3.9.4 allows remote authenticated users to execute JavaScript through a crafted rid query parameter. configDevice.php reflects the rid value from an HTTP GET request into its response without neutralizing script markup. Exploitation requires low-privileged access and a victim to load the crafted response, exposing browser-session data or actions.

The record

CVE
CVE-2020-12259
Published
May 18, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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