CVE-2021-28937Public exploitNetwork attack vector

Cleartext password disclosure via unauthenticated management page

Published Mar 29, 2021 · Updated Jul 9, 2026

Cleartext credential exposure in Acexy Wireless-N WiFi Repeater 28.08.06.1 allows remote attackers to read the administrator password. The unauthenticated /password.html endpoint embeds the administrator username and password in JavaScript configuration calls and serves them over HTTP. Network reachability to the web interface is sufficient; interception or direct retrieval discloses credentials but does not itself alter settings.

CVSS severity7.5
High
EPSS probability4.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential exposure in Acexy Wireless-N WiFi Repeater 28.08.06.1 allows remote attackers to read the administrator password. The unauthenticated /password.html endpoint embeds the administrator username and password in JavaScript configuration calls and serves them over HTTP. Network reachability to the web interface is sufficient; interception or direct retrieval discloses credentials but does not itself alter settings.

The record

CVE
CVE-2021-28937
Published
Mar 29, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-312, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

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

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-312Cleartext Storage of Sensitive Information
T1040Network Sniffing

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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