CVE-2023-41998Public exploitNetwork attack vector

Unauthenticated code execution via patch download routine

Published Nov 27, 2023 · Updated Aug 2, 2024

Unrestricted file upload in Arcserve UDP before 9.2 allows remote attackers to execute arbitrary code through an exposed SOAP service. RPSService4CPMImpl.downloadAndInstallPatch accepts an attacker-controlled URL, downloads a ZIP into the patch directory, extracts it, and executes a same-named EXE. No credentials or user interaction are required, and successful exploitation runs the supplied executable as SYSTEM on the Windows RPS host.

CVSS severity9.8
Critical
EPSS probability15.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Arcserve UDP before 9.2 allows remote attackers to execute arbitrary code through an exposed SOAP service. RPSService4CPMImpl.downloadAndInstallPatch accepts an attacker-controlled URL, downloads a ZIP into the patch directory, extracts it, and executes a same-named EXE. No credentials or user interaction are required, and successful exploitation runs the supplied executable as SYSTEM on the Windows RPS host.

The record

CVE
CVE-2023-41998
Published
Nov 27, 2023
Updated
Aug 2, 2024
Vendor
Arcserve
Product
Arcserve Unified Data Protection (UDP)
Classifications
CWE-434, T1190, T1105
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=0 <9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Arcserve · Arcserve Unified Data Protection (UDP)version=0 <9.2

Published CVSS scores

9.8Tenable Network Security, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST National Vulnerability DatabaseCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application
T1105Ingress Tool Transfer

Public exploit references

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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