Which products and versions are affected by CVE-2020-12256?

Affected: Rconfig versions 3.9.4. The full list is in the CVE brief.

Is CVE-2020-12256 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2020-12256 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-12256?

No public exploit code is known.

Is there a fix for CVE-2020-12256?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2020-12256 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2020-12256

Medium

rConfig 3.9.4 is vulnerable to reflected XSS.

Published May 18, 2020 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2020-12256 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Rconfig.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 96% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

5.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

96%

Higher than 99.8% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2020-12256 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
RconfigRconfig	3.9.4	n/a

Timeline

Publicly disclosed
May 18, 2020
Last updated
Nov 21, 2024

Weakness Type

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

References

exploithttps://gist.github.com/farid007/8855031bad0e497264e4879efb5bc9f8

FAQ

Common Questions.

rConfig 3.9.4 is vulnerable to reflected XSS.
Affected: Rconfig versions 3.9.4. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2020-12256 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.