CVE-2017-20189

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 69.1% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-01-22 00:00Z2 YR AGO

Last updated

2025-11-03 21:44Z10 MO AGO

Reserved

2024-01-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.2

Document digest

6f80e6e81b70a438bfdaf41c0924ee83b67bc7747224406448324d5f248cf198

• hackmd.iohttps://hackmd.io/%40fe1w0/HyefvRQKp
• clojure.atlassian.nethttps://clojure.atlassian.net/browse/CLJ-2204
• github.comhttps://github.com/frohoff/ysoserial/pull/68/files
• github.comhttps://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3
• security.snyk.iohttps://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20241108-0002/