CVE-2020-11593Network attack vector

Trusted-address email spoofing via HTML injection

Published Apr 6, 2020 · Updated Aug 4, 2024

Injection in CIPPlanner CIPAce 9.1 Build 2019092801 allows remote attackers to send email from a trusted customer address via HTTP POST. The web endpoint accepts attacker-supplied HTML in a POST body and later incorporates that unneutralized content into outbound email. No authentication or user interaction is required; the established consequence is forged trusted-origin email rather than code execution or data disclosure.

CVSS severity7.5
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Injection in CIPPlanner CIPAce 9.1 Build 2019092801 allows remote attackers to send email from a trusted customer address via HTTP POST. The web endpoint accepts attacker-supplied HTML in a POST body and later incorporates that unneutralized content into outbound email. No authentication or user interaction is required; the established consequence is forged trusted-origin email rather than code execution or data disclosure.

The record

CVE
CVE-2020-11593
Published
Apr 6, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-74, T1566
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 6, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1566Phishing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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