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MEDIUM · 6.5

CVE-2021-28846

A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of serv...

Vulnerability Description

A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with "%s: key len = %d, too long\n" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
TrendnetTew-755Ap Firmware1.11b03
TrendnetTew-755Ap-
TrendnetTew-755Ap2Kac Firmware1.11b03
TrendnetTew-755Ap2Kac-
TrendnetTew-821Dap2Kac Firmware1.11b03
TrendnetTew-821Dap2Kac-
TrendnetTew-825Dap Firmware1.11b03
TrendnetTew-825Dap-

Related Weaknesses (CWE)

CWE-134

References

FAQ

What is CVE-2021-28846?

CVE-2021-28846 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of serv...

How severe is CVE-2021-28846?

CVE-2021-28846 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-28846?

Check the references section above for vendor advisories and patch information. Affected products include: Trendnet Tew-755Ap Firmware, Trendnet Tew-755Ap, Trendnet Tew-755Ap2Kac Firmware, Trendnet Tew-755Ap2Kac, Trendnet Tew-821Dap2Kac Firmware.