CVE-2025-23121Network attack vector

Authenticated remote code execution

Published Jun 18, 2025 · Updated Jun 23, 2025

Remote code execution in Veeam Backup & Replication 12.3.1.1139 and earlier version 12 builds allows remote authenticated users to execute code. Veeam has not published the affected component or the operation that mishandles untrusted input, so the code-level mechanism remains undisclosed. Exploitation requires a domain account and a domain-joined backup server, and successful attacks run code on that server.

CVSS severity9.9
Critical
EPSS probability22.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Veeam Backup & Replication 12.3.1.1139 and earlier version 12 builds allows remote authenticated users to execute code. Veeam has not published the affected component or the operation that mishandles untrusted input, so the code-level mechanism remains undisclosed. Exploitation requires a domain account and a domain-joined backup server, and successful attacks run code on that server.

The record

CVE
CVE-2025-23121
Published
Jun 18, 2025
Updated
Jun 23, 2025
Vendor
Paragon Software Group
Product
Backup & Recovery
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2025Record 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=12.3.1 <=12.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Paragon Software Group · Backup & Recoveryversion=12.3.1 <=12.3.1

Published CVSS scores

9.9VeeamCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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