Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-26335— Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE

Quick assessment

Affected
Calero VeraSMART
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Calero VeraSMART是美国Calero公司的一个电话计费软件。 Calero VeraSMART 2022 R1之前版本存在安全漏洞，该漏洞源于使用静态的ASP.NET/IIS machineKey值，可能导致攻击者构造有效的ASP.NET ViewState有效载荷，进而导致服务器端反序列化和远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 2.90% · P87

Public Exploits 1

ExploitDB · 1 EDB-52540 [webapps]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Calero VeraSMART < 2022 R1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-26335

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5
Vulnerability Title
Calero VeraSMART 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Calero VeraSMART是美国Calero公司的一个电话计费软件。 Calero VeraSMART 2022 R1之前版本存在安全漏洞，该漏洞源于使用静态的ASP.NET/IIS machineKey值，可能导致攻击者构造有效的ASP.NET ViewState有效载荷，进而导致服务器端反序列化和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Calero VeraSMART 0 ~ 2022 R1 -

II. Public POCs for CVE-2026-26335

# POC Description Source Link Shenlong Link
1 None https://github.com/mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-26335

请登录查看更多情报信息。

Same Patch Batch · Calero · 2026-02-13 · 3 CVEs total

CVE-2026-26333 Calero VeraSMART < 2022 R1 .NET Remoting Arbitrary File Read Leading to ViewState RCE
CVE-2026-26334 Calero VeraSMART < 2026 R1 Hardcoded Static AES Keys Allow Decryption of Service Credentia

IV. Related Vulnerabilities

Same product: VeraSMART
Same vendor: Calero
Same weakness: CWE-321

V. Comments for CVE-2026-26335

No comments yet

Leave a comment