CVE-2021-26731 CRITICAL

CVE-2021-26731: spx_restservice modifyUserb_func Command Injection and Multiple Stack-Based Buffer Overflows

Vendor Lanner Inc

Product IAC-AST2500A

Weakness CWE-94 · Code injection

Published October 24, 2022

Last update May 7, 2025

View on NVD All CVEs

CVSS base score

9.1/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Command injection and multiple stack-based buffer overflows vulnerabilities in the modifyUserb_func function of spx_restservice allow an authenticated attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

Key dates

02Disclosure timeline

October 24, 2022 CVE published

May 7, 2025 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2021-26731 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/94.html

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