CVE-2021-28936Public exploitNetwork attack vector

Unauthenticated administrator password change via GET

Published Mar 29, 2021 · Updated Jul 9, 2026

Incorrect authorization in Acexy Wireless-N WiFi Repeater REV 1.0 firmware 28.08.06.1 allows remote attackers to change the admin password. The web management password-change handler accepts a crafted HTTP GET request without verifying an authenticated session. Network access to the management interface and knowledge of the administrator username are sufficient, enabling takeover of the management account.

CVSS severity7.5
High
EPSS probability2.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Acexy Wireless-N WiFi Repeater REV 1.0 firmware 28.08.06.1 allows remote attackers to change the admin password. The web management password-change handler accepts a crafted HTTP GET request without verifying an authenticated session. Network access to the management interface and knowledge of the administrator username are sufficient, enabling takeover of the management account.

The record

CVE
CVE-2021-28936
Published
Mar 29, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1098
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:N/I:P/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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-863Incorrect Authorization
T1098Account Manipulation

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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