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CVE-2021-28936

25
FAUCET Score

CVE-2021-28936 describes an authentication bypass vulnerability in the Acexy Wireless-N WiFi Repeater REV 1.0 firmware, allowing an unauthenticated attacker to change the administrator password via a crafted HTTP GET request if the default username "admin" is known. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity and without user interaction, leading to a complete compromise of the device's administrative control. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, and community discussion is minimal, the potential for unauthorized administrative access remains significant.

Impacted Technologies

VendorProductVersion(s)CPE
28.08.06.1CPE matchmatch criteria
cpe:2.3:o:acexy:wireless-n_wifi_repeater_firmware:28.08.06.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.03%
Probability of exploitation in next 30 days
EPSS Percentile
79.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0203 is in the 63rd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog-ssh3ll.medium.com / acexy-wireless-n-wifi-repeater-vulnerabilities-8bd5d14a2990
ExploitThird Party Advisory