CVE-2021-35971 Deserialization in n/a
Attackers can execute arbitrary code by exploiting unsafe deserialization in Veeam Backup and Replication's .NET remoting interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-35971?
CVE-2021-35971 is a critical unsafe deserialization vulnerability in n/a, published on 30 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.
Weakness: CWE-502
Which versions are affected by CVE-2021-35971?
It affects 1 product.
Products include Veeam Veeam Backup \& Replication.
How do I fix CVE-2021-35971?
No fix has been published for CVE-2021-35971 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-2021-35971 being exploited?
There is no known exploitation of CVE-2021-35971 in the wild and no public exploit code.
Other vulnerabilities in n/a
- 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-vmw6-j58p-9p55.