TRENDnet TEW-755AP up to 20260702 ssi /cgi-bin/email.cgi log_email_server command injection

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.7 | $0-$5k | 2.35 |
Summary
A vulnerability labeled as critical has been found in TRENDnet TEW-755AP up to 20260702. This vulnerability affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Executing a manipulation can lead to command injection.
This vulnerability appears as CVE-2026-76591. The attack may be performed from remote. In addition, an exploit is available.
Details
A vulnerability has been found in TRENDnet TEW-755AP up to 20260702 and classified as critical. This vulnerability affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.
The advisory is shared for download at github.com. This vulnerability was named CVE-2026-76591. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.
It is possible to download the exploit at github.com. It is declared as proof-of-concept.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.4VulDB Meta Temp Score: 6.7
VulDB Base Score: 7.4
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Programming Language: 🔒
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
08/19/2026 Advisory disclosed08/19/2026 VulDB entry created
08/19/2026 VulDB entry last update
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2026-76591 (🔒)
GCVE (CVE): GCVE-0-2026-76591
GCVE (VulDB): GCVE-100-393088
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 08/19/2026 16:43Changes: 08/19/2026 16:43 (56)
Complete: 🔍
Submitter: fuhanhan2015
Cache ID: 216::103
Submit
Accepted
- Submit #877853: TRENDnet TEW-755AP TEW-755AP Command Injection (by fuhanhan2015)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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