CVE-2026-93026Network attack vector

Secret modification via Backup Viewer authorization flaw

Published Oct 7, 2026 · Updated Oct 7, 2026

Improper access control in Veeam Backup & Replication 12.3.2.4854 and earlier lets remote authenticated users alter protected backup secrets. A Backup Viewer can modify or delete the Enterprise Manager master key and read or overwrite stored antivirus update credentials on the backup server; Veeam has not disclosed the faulty authorization check. Exploitation requires a Backup Viewer account, and the disclosed impact is limited to these key and credential operations rather than code execution.

CVSS severity6.1
Medium
EPSS probability0.30%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Veeam Backup & Replication 12.3.2.4854 and earlier lets remote authenticated users alter protected backup secrets. A Backup Viewer can modify or delete the Enterprise Manager master key and read or overwrite stored antivirus update credentials on the backup server; Veeam has not disclosed the faulty authorization check. Exploitation requires a Backup Viewer account, and the disclosed impact is limited to these key and credential operations rather than code execution.

The record

CVE
CVE-2026-93026
Published
Oct 7, 2026
Updated
Oct 7, 2026
Vendor
Veeam Software
Product
Veeam Backup & Replication
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2026Record 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 <12.3.2.4934

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Veeam Software · Veeam Backup & Replicationversion=12 <12.3.2.4934

Published CVSS scores

6.1Veeam SoftwareCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA: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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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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