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Arbitrary File Write in Linux-based Veeam Backup & Replication Server

IdentifiersCVE-2026-32997CWE-36· Absolute Path Traversal

CVE-2026-32997 is an authenticated arbitrary file write vulnerability affecting Linux-based Veeam Backup & Replication servers, specifically Linux-based backup servers operating the Veeam Software Appliance. According to the provided content, a user authenticated with the Backup Administrator role can exploit the flaw to write arbitrary files and modify system files on the affected server. The CVE record classifies the issue as CWE-36, indicating an absolute path traversal weakness underlying the arbitrary file write condition. No more specific vulnerable function or code path is provided in the available information.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated Backup Administrator to write arbitrary files on the Linux-based Veeam Backup & Replication server and modify system files. This can compromise the confidentiality, integrity, and availability of the affected system, as reflected in the provided CVSS v4.0 metadata indicating high impact across those dimensions. Depending on what files are overwritten or created, this could enable broader system compromise or operational disruption.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, restrict and closely monitor assignment and use of the Backup Administrator role, as exploitation requires authenticated access with that privilege level. Limit network access to management interfaces, reduce exposure of the Linux-based backup server to only trusted administrative networks, and monitor for unexpected modification of system files. No vendor-specific workaround beyond updating is provided in the available information.

Remediation

Patch, then assume compromise.

Apply Veeam's security update for the affected Linux-based Veeam Software Appliance / Backup & Replication deployment. The provided content states that Veeam resolved this vulnerability by releasing version 13.0.2. Review and follow Veeam advisory KB4852 for vendor-specific upgrade guidance: https://www.veeam.com/kb4852.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
Veeam SoftwareBackup & Replicationapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

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Social activity3

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