CVE-2021-43159

Name: CVE-2021-43159
Creator: NVD / NIST
Published: 2022-05-04T01:15:48.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.91%

Last modified Jun 17, 2026

CVE-2021-43159 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the setSessionTime function in /cgi-bin/luci/api/common... EPSS estimates a 1.91% chance of exploitation in the next 30 days.

Description

A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the setSessionTime function in /cgi-bin/luci/api/common..

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.91%

77.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Ruijienetworks	Reyeeos	<= 1.55.1915_ew_3.0\(1\)b11p55

References

http://ruijie.comNot Applicable
https://seclists.org/fulldisclosure/2022/May/0Mailing List, Third Party Advisory
http://ruijie.comNot Applicable
https://seclists.org/fulldisclosure/2022/May/0Mailing List, Third Party Advisory

Timeline

Published: May 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43159?

How severe is CVE-2021-43159?

CVE-2021-43159 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43159?

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-2021-43159?

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

Scan your code now

Source: NVD / NIST