ZeroDay Findings
Sign inSign up

Findings

Vulnerability · CVE-2025-33074

Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.

Published Apr 30, 2025 · corrected/updated Aug 10, 2026 · Microsoft Azure Functions · evidence confidence high

Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2025-33074 is a high public vulnerability record for Microsoft Azure Functions. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Microsoft Azure Functions is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Microsoft Azure Functions - (-). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 7.5, EPSS 58.0%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: euvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 30, 2025 · EUVD

    Detected

    Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.

  2. Aug 10, 2026 · EUVD

    Updated

    Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.

Affected

  • vendor Microsoft Azure Functions --

Sources

  • EUVDVulnerability recordEUVD-2025-12758

    Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.

    euvd.enisa.europa.eu

References