CVE-2026-4497

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-4497
A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. Affected by this issue is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

7.3 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

7.5 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://github.com/hellonestor/killallbug/issues/1 Exploit Issue Tracking
https://github.com/user-attachments/files/25790616/Unauthenticated.Remote.Code.Execution.in.TOTOLINK.WA300.via.Command.Injection.in.recvUpgradeNewFw.zip Exploit
https://vuldb.com/?ctiid.352046 Permissions Required VDB Entry
https://vuldb.com/?id.352046 Third Party Advisory VDB Entry
https://vuldb.com/?submit.773875 Third Party Advisory VDB Entry
https://www.totolink.net/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:wa300_firmware:5.2cu.7112_b20190227:*:*:*:*:*:*:*
cpe:2.3:h:totolink:wa300:-:*:*:*:*:*:*:*
History

03 Apr 2026, 11:31

Type Values Removed Values Added
First Time Totolink wa300 Firmware
Totolink wa300
Totolink
CPE cpe:2.3:o:totolink:wa300_firmware:5.2cu.7112_b20190227:*:*:*:*:*:*:*
cpe:2.3:h:totolink:wa300:-:*:*:*:*:*:*:*
Summary
  • (es) Una vulnerabilidad fue determinada en Totolink WA300 5.2cu.7112_B20190227. Afectada por este problema es la función recvUpgradeNewFw del archivo /cgi-bin/cstecgi.cgi. Esta manipulación causa inyección de comandos del sistema operativo. La explotación remota del ataque es posible. El exploit ha sido divulgado públicamente y puede ser utilizado.
References () https://github.com/hellonestor/killallbug/issues/1 - () https://github.com/hellonestor/killallbug/issues/1 - Exploit, Issue Tracking
References () https://github.com/user-attachments/files/25790616/Unauthenticated.Remote.Code.Execution.in.TOTOLINK.WA300.via.Command.Injection.in.recvUpgradeNewFw.zip - () https://github.com/user-attachments/files/25790616/Unauthenticated.Remote.Code.Execution.in.TOTOLINK.WA300.via.Command.Injection.in.recvUpgradeNewFw.zip - Exploit
References () https://vuldb.com/?ctiid.352046 - () https://vuldb.com/?ctiid.352046 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.352046 - () https://vuldb.com/?id.352046 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.773875 - () https://vuldb.com/?submit.773875 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product

20 Mar 2026, 19:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-20 19:16

Updated : 2026-04-29 01:00

NVD link : CVE-2026-4497

Mitre link : CVE-2026-4497

CVE.ORG link : CVE-2026-4497

JSON object : View

Products Affected

totolink

  • wa300
  • wa300_firmware
CWE
CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')