CVE-2021-27175Public exploitNetwork attack vector

Wi-Fi credential disclosure via world-readable configuration

Published Feb 10, 2021 · Updated Aug 3, 2024

Cleartext credential storage in FiberHome HG6245D firmware through RP2613 allows remote attackers to read 2.4 GHz Wi-Fi secrets. The /fhconf/fh_wifi/wifictl_2g.cfg file records WPA-PSK, WEP, and RADIUS keys without encryption and grants read access through mode 0644. Exploitation requires a network path that yields filesystem access, after which the exposed keys can provide access to protected wireless networks.

CVSS severity7.5
High
EPSS probability18.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in FiberHome HG6245D firmware through RP2613 allows remote attackers to read 2.4 GHz Wi-Fi secrets. The /fhconf/fh_wifi/wifictl_2g.cfg file records WPA-PSK, WEP, and RADIUS keys without encryption and grants read access through mode 0644. Exploitation requires a network path that yields filesystem access, after which the exposed keys can provide access to protected wireless networks.

The record

CVE
CVE-2021-27175
Published
Feb 10, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-312, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV: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-312Cleartext Storage of Sensitive Information
T1552.001Unsecured Credentials: Credentials In Files

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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