CVE-2021-35236

Name: CVE-2021-35236
Creator: NVD / NIST
Published: 2021-10-27T01:15:07.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2021-35236 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The Secure flag is not set in the SSL Cookie of Kiwi Syslog Server 9.7.2 and previous versions. The Secure attribute tells the browser to only send the cookie if the request is being sent over a secure channel such as HTTPS. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

The Secure flag is not set in the SSL Cookie of Kiwi Syslog Server 9.7.2 and previous versions. The Secure attribute tells the browser to only send the cookie if the request is being sent over a secure channel such as HTTPS. This will help protect the cookie from being passed over unencrypted requests. If the application can be accessed over both HTTP, there is a potential for the cookie can be sent in clear text.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.50%

39.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Solarwinds	Kiwi Syslog Server	<= 9.7.2

References

https://documentation.solarwinds.com/en/success_center/kss/content/release_notes/kss_9-8_release_notes.htmRelease Notes, Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35236Vendor Advisory
https://documentation.solarwinds.com/en/success_center/kss/content/release_notes/kss_9-8_release_notes.htmRelease Notes, Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35236Vendor Advisory

Timeline

Published: Oct 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35236?

How severe is CVE-2021-35236?

CVE-2021-35236 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35236?

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-2021-35236?

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

Scan your code now

Source: NVD / NIST