Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 2.9%
from disclosure to weapon1 days
Published on NVDFeb 13
1st PoC+1d
exploitation probability
2.9%top 14% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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.
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
Affected products
Calero · VeraSMARTpublic PoCs found — 2
exploitdbwww.exploit-db.com/exploits/52540unverifiedgithubgithub.com/mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.