This security advisory addresses two vulnerabilities identified in protocol gateways.
CVE-2026-86325
A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface. The vulnerability is caused by insufficient length validation of the `account_name` parameter when processing account management requests. An attacker authenticated as a read-only user to the web management interface could supply a specially crafted account name that exceeds the size of the internal stack buffer, resulting in corruption of program execution flow. Successful exploitation could allow an attacker to read sensitive information from device memory, including credentials, modify arbitrary memory contents, and disrupt device availability.
CVE-2026-86326
An improper verification of cryptographic signature vulnerability exists in protocol gateways because the device does not properly verify the cryptographic authenticity of firmware images before installation. An attacker with high privileges and access to the firmware update interface could provide a specially crafted or modified firmware image, causing it to be installed on the device. Successful exploitation could allow the attacker to execute unauthorized code, compromise the integrity and availability of the device, and persist malicious modifications across subsequent firmware updates.
Given the high severity of these issues, users should apply the solutions immediately to reduce security risks.
The Identified Vulnerability Type and Potential Impact
| CVE ID |
Vulnerability Type |
Impact |
| CVE-2026-86325 |
CWE-121: Stack-based Buffer Overflow
|
CAPEC-24: Filter Failure through Buffer Overflow |
| CVE-2026-86326 |
CWE-347: Improper Verification of Cryptographic Signature |
CAPEC-475: Signature Spoofing by Improper Validation |
Vulnerability Scoring Details
|
CVE ID
|
Base Score
|
Vector
|
Severity |
Unauthenticated
Remote Exploits
|
| CVE-2026-86325 |
CVSS 4.0: 9.4
|
AV:N/AC:L/AT:N/PR:L/UI:N/
VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
|
Critical |
No |
| CVE-2026-86326 |
CVSS 4.0: 8.6 |
AV:N/AC:L/AT:N/PR:H/UI:N/
VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
|
High |
No |