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Vulnerabilities

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 · catalog updated Aug 10, 2026 · Microsoft Azure Functions

Check if you run it

No confirmed exploitation is on record for CVE-2025-33074. EPSS is 0.58%. Act only if a listed version of Microsoft Azure Functions is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.58%
Remediation
Advisory link
Affected products
vendor Microsoft Azure Functions -

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Microsoft Azure Functions --

How to fix CVE-2025-33074

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-33074. EPSS is 0.58%. Act only if a listed version of Microsoft Azure Functions is installed.

Which versions are affected?

Compare what you have installed with Microsoft Azure Functions - -. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.58%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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.

Sources

  • CVE.orgVulnerability recordCVE-2025-33074

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-33074

    30-day exploitation probability 0.6%

    first.org
  • 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

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.