High severity7.4NVD Advisory· Published Aug 22, 2026· Updated Aug 25, 2026

CVE-2026-77945

Description

A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an unknown function of the file /cgi-bin/upload.cgi of the component ssi. Performing a manipulation of the argument filename results in command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Trendnet/TEW-821DAPllm-fuzzy
Range: 2.2.01b05

Patches

Vulnerability mechanics

References

News mentions

Trendnet TEW-821DAP and TEW-823DRU Hit by Three Command Injection Flaws
Vypr Intelligence · Aug 22, 2026

Severity

HighCVSS v3.1

7.4/ 10

CVSS v42.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack vector: Network
Complexity: Low
Privileges: Low
User interaction: None
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: Low

Vector

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

EPSS

Probability of exploitation in the next 30 days.

1.77%

VYPR risk score

Composite of severity, exploitation, and reach.

0.48medium

cvss	0.481
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE ID

CVE-2026-77945