CVE-2020-7813

Code execution via unchecked ActiveX method arguments

Published May 22, 2020 · Updated Aug 4, 2024

Code execution in Kaoni ezHTTPTrans 1.0.0.70 through 1.0.0.90 allows attackers to execute arbitrary files through its ActiveX control. The ezhttptrans.ocx control accepts attacker-selected ActiveX method arguments, downloads the referenced file, and executes it without validating its origin or integrity. Exploitation requires the control to be invoked in a user context; successful execution runs attacker-supplied code with that user’s privileges.

CVSS severity7.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Kaoni ezHTTPTrans 1.0.0.70 through 1.0.0.90 allows attackers to execute arbitrary files through its ActiveX control. The ezhttptrans.ocx control accepts attacker-selected ActiveX method arguments, downloads the referenced file, and executes it without validating its origin or integrity. Exploitation requires the control to be invoked in a user context; successful execution runs attacker-supplied code with that user’s privileges.

The record

CVE
CVE-2020-7813
Published
May 22, 2020
Updated
Aug 4, 2024
Vendor
Kaoni
Product
ezHTTPTrans
Classifications
CWE-494, T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0.70 <=1.0.0.90

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Kaoni · ezHTTPTransversion=1.0.0.70 <=1.0.0.90

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8KrCERT/CCCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-494Download of Code Without Integrity Check
T1204User Execution

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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