CVE-2021-26731 : faille critique lannerinc iac-ast2500a firmware (CVSS 9.8)

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.

Sévérité

Critique (CVSS 9.8)

Vecteur CVSS

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

Exploitation active

Non signalée par la CISA

Publication

24 oct. 2022

Dernière mise à jour

17 juin 2026

• lannerinc iac-ast2500a firmware

• Fiche CVE-2021-26731 sur le NVD (NIST)
• nozominetworks.com/blog/vulnerabilities…
• nozominetworks.com/labs/vulnerability-advisories/cve-2021-26731/