CVE-2020-19559Network attack vector

Unauthenticated code execution via SOAP deserialization

Published Sep 11, 2023 · Updated Sep 26, 2024

Insecure deserialization in Diebold Agilis XFS for Opteva 4.1.61.1 allows remote attackers to execute arbitrary code over HTTP. SpiService configures .NET Remoting with typeFilterLevel set to Full, deserializes the SOAP body, and accepts a method name that passes ResolveMethod. The unauthenticated service listens on TCP port 8043 on all interfaces, and successful payloads run commands or establish a reverse shell on the ATM.

CVSS severity9.8
Critical
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure deserialization in Diebold Agilis XFS for Opteva 4.1.61.1 allows remote attackers to execute arbitrary code over HTTP. SpiService configures .NET Remoting with typeFilterLevel set to Full, deserializes the SOAP body, and accepts a method name that passes ResolveMethod. The unauthenticated service listens on TCP port 8043 on all interfaces, and successful payloads run commands or establish a reverse shell on the ATM.

The record

CVE
CVE-2020-19559
Published
Sep 11, 2023
Updated
Sep 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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