SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-39475

Inductive Automation Ignition ParameterVersionJavaSerializationCodec Deserialization of Untrusted Data Remote Code Execution Vulnerability.

CRITICAL 9.8EPSS 64.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 64.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Inductive Automation Ignition ParameterVersionJavaSerializationCodec Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ParameterVersionJavaSerializationCodec class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-20290.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
64.08% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-502
Affected
inductiveautomation/ignition
Source
zdi-disclosures@trendmicro.com
EPSS trend
0%33%65%3 November 2026: 64.08%3 November 20263 November 2026

EPSS 64.1% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.