CVE-2021-35336

Name: CVE-2021-35336
Creator: NVD / NIST
Published: 2021-07-01T13:15:08.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 11.59%

Last modified Jun 17, 2026

CVE-2021-35336 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Tieline IP Audio Gateway 2.6.4.8 and below is affected by Incorrect Access Control. A vulnerability in the Tieline Web Administrative Interface could allow an unauthenticated user to access a sensitive part of the system with a high privileged account.. EPSS estimates a 11.59% chance of exploitation in the next 30 days.

Description

Tieline IP Audio Gateway 2.6.4.8 and below is affected by Incorrect Access Control. A vulnerability in the Tieline Web Administrative Interface could allow an unauthenticated user to access a sensitive part of the system with a high privileged account.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

11.59%

95.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1188

Affected Software

Vendor	Product	Versions
Tieline	Ip Audtio Gateway Firmware	<= 2.6.4.8

References

https://pratikkhalane91.medium.com/use-of-default-credentials-to-unauthorised-remote-access-of-internal-panel-of-tieline-c1ffe3b3757cExploit, Third Party Advisory
https://pratikkhalane91.medium.com/use-of-default-credentials-to-unauthorised-remote-access-of-internal-panel-of-tieline-c1ffe3b3757cExploit, Third Party Advisory

Timeline

Published: Jul 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35336?

How severe is CVE-2021-35336?

CVE-2021-35336 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 11.59% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35336?

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-2021-35336?

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

Scan your code now

Source: NVD / NIST