How severe is CVE-2021-35336?

CVE-2021-35336 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35336 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35336?

CVE-2021-35336 affects Tieline Ip Audtio Gateway Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35336?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-35336 published?

CVE-2021-35336 was published on 2021-07-01 and last updated on 2026-06-17.

CVE-2021-35336

CVE-2021-35336 is a critical-severity vulnerability in Tieline Ip Audtio Gateway Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-1188.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1188
Affected product: Tieline Ip Audtio Gateway Firmware
Published: 2021-07-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-35336?: 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.
How severe is CVE-2021-35336?: CVE-2021-35336 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35336 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35336?: CVE-2021-35336 affects Tieline Ip Audtio Gateway Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35336?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-35336 published?: CVE-2021-35336 was published on 2021-07-01 and last updated on 2026-06-17.

References

https://pratikkhalane91.medium.com/use-of-default-credentials-to-unauthorised-remote-access-of-internal-panel-of-tieline-c1ffe3b3757c

Affected products (1)

cpe:2.3:o:tieline:ip_audtio_gateway_firmware:*:*:*:*:*:*:*:*

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