CVE-2026-26335

CRITICAL

Calero VeraSMART <2022 R1 - Remote Code Execution

Title source: llm

Description

Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\Program Files (x86)\\Veramark\\VeraSMART\\WebRoot\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.

Exploits (2)

github WORKING POC 10 stars

by XiaomingX · pythonpoc

https://github.com/XiaomingX/data-cve-poc-py-v1/tree/main/2026/CVE-2026-26335

View Code ZIP pw:eip

nomisec WORKING POC

by mbanyamer · poc

https://github.com/mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE

View Code ZIP pw:eip

References (2)

[Various Sources] https://www.calero.com/

[Third Party Advisory] https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce

Scores

CVSS v3 9.8

EPSS 0.0013

EPSS Percentile 32.0%

Attack Vector NETWORK

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

Details

CWE

CWE-321

Status published

Products (2)

calero/verasmart 2022.0

calero/verasmart < 2022.0

Published Feb 13, 2026

Tracked Since Feb 18, 2026