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Vulnerability record · CVE-2024-42455 · published 4 December 2024

CVE-2024-42455: Veeam backup \& replication missing authentication for critical function vulnerability

Veeam · Veeam Backup \& Replication

A vulnerability in Veeam Backup & Replication allows a low-privileged user to connect to remoting services and exploit insecure deserialization by sending a serialized temporary file collection. This exploit allows the attacker to delete any file on the system with service account privileges. The vulnerability is caused by an insufficient blacklist during the deserialization process.

8.1 CVSS 3.1 High EPSS 15% · top 3.4% CWE-306 · Missing authentication for critical function
8.1CVSS 3.1 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A vulnerability in Veeam Backup & Replication allows a low-privileged user to connect to remoting services and exploit insecure deserialization by sending a serialized temporary file collection. This exploit allows the attacker to delete any file on the system with service account privileges. The vulnerability is caused by an insufficient blacklist during the deserialization process.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.veeam.com/kb4693 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-40711Veeam Backup & Replication deserialization flaw allows unauthenticated RCEVeeam Backup & Replication contains a deserialization of untrusted data vulnerability (CWE-502) that permits an unauthenticated attacker to execute a…KEVEPSS 90%analysed9.8CVE-2022-26501Veeam Backup & Replication missing authentication allows remote code executionVeeam Backup & Replication 10.x and 11.x contains an incorrect access control flaw (CWE-306, missing authentication for a critical function). A remot…KEVEPSS 4.1%analysed8.8CVE-2022-26500Veeam Backup & Replication path traversal leads to remote code executionVeeam Backup & Replication 9.5U3, 9.5U4, 10.x and 11.x fail to properly limit path names, letting an authenticated remote user reach internal API fun…KEVEPSS 5.8%analysed7.5CVE-2023-27532Veeam Backup & Replication missing authentication exposes stored credentialsVeeam Backup & Replication contains a missing authentication flaw in a critical function that allows encrypted credentials stored in the configuratio…KEVEPSS 81%analysed9.9CVE-2026-21708Veeam backup \& replication sql injection vulnerabilityA vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.EPSS 1.1%9.9CVE-2026-21669Veeam backup \& replication code injection vulnerabilityA vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.EPSS 1.2%9.9CVE-2025-48983Veeam backup \& replication improper access control vulnerabilityA vulnerability in the Mount service of Veeam Backup & Replication, which allows for remote code execution (RCE) on the Backup infrastructure hosts b…EPSS 0.82%9.8CVE-2025-55125Veeam backup \& replication command injection vulnerabilityThis vulnerability allows a Backup or Tape Operator to perform remote code execution (RCE) as root by creating a malicious backup configuration file.EPSS 0.88%

Source: NIST National Vulnerability Database (record CVE-2024-42455), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.