CVE-2015-9551 — CRITICAL (9.8)

Q: How severe is CVE-2015-9551?

CVE-2015-9551 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2015-9551?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A850R-V1 Firmware, Totolink A850R-V1, Totolink F1-V2 Firmware, Totolink F1-V2, Totolink F2-V1 Firmware.

Vulnerability Description

An issue was discovered on TOTOLINK A850R-V1 through 1.0.1-B20150707.1612 and F1-V2 through 1.1-B20150708.1646 devices. There is Remote Code Execution in the management interface via the formSysCmd sysCmd parameter.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	A850R-V1 Firmware	< 1.0.1-b20150707.1612
Totolink	A850R-V1	-
Totolink	F1-V2 Firmware	< 2.1.1-b20150708.1646
Totolink	F1-V2	-
Totolink	F2-V1 Firmware	< 2.1.0-b20150320.1611
Totolink	F2-V1	-
Totolink	N150Rt-V2 Firmware	< 2.1.1-b20150708.1548
Totolink	N150Rt-V2	-
Totolink	N151Rt-V2 Firmware	< 1.1-b20150708.1559
Totolink	N151Rt-V2	-
Totolink	N300Rh-V2 Firmware	< 2.0.1-b20150708.1625
Totolink	N300Rh-V2	-
Totolink	N300Rh-V3 Firmware	< 3.0.0-b20150331.0858
Totolink	N300Rh-V3	-
Totolink	N300Rt-V2 Firmware	< 2.1.1-b20150708.1613
Totolink	N300Rt-V2	-

References

https://pierrekim.github.io/blog/2015-07-16-backdoor-and-RCE-found-in-8-TOTOLINKExploitThird Party Advisory
https://pierrekim.github.io/blog/2015-07-16-backdoor-and-RCE-found-in-8-TOTOLINKExploitThird Party Advisory

FAQ

What is CVE-2015-9551?

CVE-2015-9551 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered on TOTOLINK A850R-V1 through 1.0.1-B20150707.1612 and F1-V2 through 1.1-B20150708.1646 devices. There is Remote Code Execution in the management interface via the formSysCmd sy...

How severe is CVE-2015-9551?

CVE-2015-9551 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2015-9551?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A850R-V1 Firmware, Totolink A850R-V1, Totolink F1-V2 Firmware, Totolink F1-V2, Totolink F2-V1 Firmware.