CVE-2020-11556

Name: CVE-2020-11556
Creator: NVD / NIST
Published: 2020-04-09T13:15:12.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2020-11556 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An issue was discovered in Castle Rock SNMPc Online 12.10.10 before 2020-01-28. There are multiple persistent (stored) and reflected XSS vulnerabilities.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

An issue was discovered in Castle Rock SNMPc Online 12.10.10 before 2020-01-28. There are multiple persistent (stored) and reflected XSS vulnerabilities.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.56%

42.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Castlerock	Snmpc Online	>= 12.10.10, < 2020-01-28

References

https://medium.com/tsscyber/noc-noc-whos-there-your-nms-is-pwned-1826174e0deeExploit, Third Party Advisory
https://medium.com/tsscyber/noc-noc-whos-there-your-nms-is-pwned-1826174e0deeExploit, Third Party Advisory

Timeline

Published: Apr 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11556?

An issue was discovered in Castle Rock SNMPc Online 12.10.10 before 2020-01-28. There are multiple persistent (stored) and reflected XSS vulnerabilities.

How severe is CVE-2020-11556?

CVE-2020-11556 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11556?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11556?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST