CVE-2024-42455 Deserialization in Backup & Replication
Low-privileged users can delete arbitrary files with service account privileges via insecure deserialization in Veeam Backup & Replication.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-42455?
CVE-2024-42455 is a high-severity unsafe deserialization vulnerability in Veeam Backup & Replication, published on 4 Dec 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2024-42455?
It affects 1 product.
Products include Veeam Veeam Backup \& Replication.
How do I fix CVE-2024-42455?
No fix has been published for CVE-2024-42455 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2024-42455 being exploited?
There is no known exploitation of CVE-2024-42455 in the wild and no public exploit code.
Other vulnerabilities in Veeam Backup & Replication
- CVE-2024-40711 Veeam Backup and Replication Deserialization
- CVE-2022-26501 Veeam Backup & Replication Remote Code Execution
- CVE-2022-26500 Veeam Backup & Replication Remote Code Execution
- CVE-2023-27532 Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function
- CVE-2026-21666 Missing authorization in Backup and Replication
Sources
Also known as GHSA-hw3m-2wrm-879c.