CVE-2021-35336Public exploitNetwork attack vector

Unauthenticated administrative access via default credentials

Published Jul 1, 2021 · Updated Aug 4, 2024

Incorrect access control in Tieline IP Audio Gateway 2.6.4.8 and earlier allows remote attackers to access its privileged web panel. The Web Administrative Interface accepts published default account credentials, authenticating an unchanged factory account with high privileges. Network reachability of the embedded management interface and retention of the default credentials are required; successful access exposes administrative functions.

CVSS severity9.8
Critical
EPSS probability10.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Tieline IP Audio Gateway 2.6.4.8 and earlier allows remote attackers to access its privileged web panel. The Web Administrative Interface accepts published default account credentials, authenticating an unchanged factory account with high privileges. Network reachability of the embedded management interface and retention of the default credentials are required; successful access exposes administrative functions.

The record

CVE
CVE-2021-35336
Published
Jul 1, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1188, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1188Initialization of a Resource with an Insecure Default
T1078.001Valid Accounts: Default Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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