CVE-2021-42886Public exploitNetwork attack vector

Credential disclosure via unauthenticated configuration export

Published Jun 3, 2022 · Updated Aug 4, 2024

Information disclosure in TOTOLINK EX1200T 4.1.2cu.5215 allows remote attackers to obtain router credentials through an HTTP request. The ExportSettings.sh CGI endpoint serves the apmib configuration file without checking authorization, and the decoded export contains usernames and passwords. Network access to the device's HTTP interface is sufficient to steal configuration data and credentials; no integrity or availability impact is reported.

CVSS severity7.5
High
EPSS probability2.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TOTOLINK EX1200T 4.1.2cu.5215 allows remote attackers to obtain router credentials through an HTTP request. The ExportSettings.sh CGI endpoint serves the apmib configuration file without checking authorization, and the decoded export contains usernames and passwords. Network access to the device's HTTP interface is sufficient to steal configuration data and credentials; no integrity or availability impact is reported.

The record

CVE
CVE-2021-42886
Published
Jun 3, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2022CVE 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

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

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.

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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-200Exposure of Sensitive Information to an Unauthorized Actor

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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