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CRITICAL

CVE-2021-46703

CVSS v3

9.8

CRITICAL

EPSS Score

1.9 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • RazorEngineNuGetall versions · no fixed version listed

Full record on NVD

Description

In the IsolatedRazorEngine component of Antaris RazorEngine through 4.5.1-alpha001, an attacker can execute arbitrary .NET code in a sandboxed environment (if users can externally control template contents). NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Technical details

Published
2022-03-06

Frequently asked questions

What is CVE-2021-46703?

In the IsolatedRazorEngine component of Antaris RazorEngine through 4.5.1-alpha001, an attacker can execute arbitrary .NET code in a sandboxed environment (if users can externally control template contents). NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Is CVE-2021-46703 actively exploited?

Active exploitation of CVE-2021-46703 has not been confirmed. Its EPSS score was 1.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-46703?

CVE-2021-46703 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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