CVE-2026-26335CRITICAL 9.8EPSS p84.7%

CVE-2026-26335CVE-2026-26335

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 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS2.81% probability of exploitation · percentile 84.7% · 2026-06-19T12:03:05Z
Published2026-02-13
Last modified2026-02-26

Underlying weaknesses· 1

CWE-321

References

  1. https://www.calero.com/
  2. https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce

1

TypeTargetConfidenceTier
WeaknessUse of Hard-coded Cryptographic Keycwe-3210%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2026-26333
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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.