What is CVE-2017-9424?

CVE-2017-9424 is a critical-severity vulnerability in Ideablade Breeze.server.net, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2017-06-22.

How severe is CVE-2017-9424?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-9424 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Ideablade Breeze.server.net

CVE-2017-9424

IdeaBlade Breeze Breeze.Server.NET before 1.6.5 allows remote attackers to execute arbitrary code, related to use of TypeNameHandling in JSON deserialization.

Vulnerability class: Insecure Deserialization

Published 2017-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.7th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Ideablade Breeze.server.net

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

Y4er/dotnet-deserialization

References

breeze.github.io/doc-net/release-notes.html (Release Notes, Vendor Advisory)
www.blackhat.com/us-17/briefings.html (Technical Description)

Frequently asked questions

What is CVE-2017-9424?: CVE-2017-9424 is a critical-severity vulnerability in Ideablade Breeze.server.net, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2017-06-22.
How severe is CVE-2017-9424?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-9424 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.