CVE-2026-26335 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 2.6% (pctl 85)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.6% — more likely to be exploited than 85% of all CVEs |
| Weakness | CWE-321 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2026-02-13 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| calero | verasmart |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Repetier-Server 1.4.10 - Path Traversal | 2026-04-30 |
References
→ the Explorer · watch your stack · NVD