CVE-2024-40711 Veeam Backup & Replication: unsafe data loading
In plain words: The program unpacks saved data from outside without checking it is safe. Usually lets an attacker run code on the server.
Confirmed exploited by CISA on · US federal patch deadline Nov 7, 2024
What to do
- Install Veeam's security update for Backup & Replication. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Veeam Backup and Replication Deserialization Vulnerability
- Product
- Veeam Backup & Replication
- CISA description
- Veeam Backup and Replication contains a deserialization vulnerability allowing an unauthenticated user to perform remote code execution.
- Type of flaw
- Unsafe data loading (CWE-502)
- Confirmed exploited
- Oct 17, 2024 — known to be used in ransomware attacks
- US federal patch deadline
- Nov 7, 2024
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Answering about CVE-2024-40711 ·
Questions about CVE-2024-40711
Is CVE-2024-40711 being exploited?
Yes. CISA added CVE-2024-40711 to its Known Exploited Vulnerabilities catalog on Oct 17, 2024, which means there is reliable evidence of real-world attacks, including by ransomware groups.
How do I fix CVE-2024-40711?
Install Veeam's security update for Backup & Replication. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2024-40711?
Only if you use Veeam Backup & Replication. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.