CVE-2022-26501 Veeam Backup & Replication: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Jan 3, 2023
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 & Replication Remote Code Execution Vulnerability
- Product
- Veeam Backup & Replication
- CISA description
- The Veeam Distribution Service in the Backup & Replication application allows unauthenticated users to access internal API functions. A remote attacker can send input to the internal API which may lead to uploading and executing of malicious code.
- Type of flaw
- Login or permission bypass (CWE-306)
- Confirmed exploited
- Dec 13, 2022 — known to be used in ransomware attacks
- US federal patch deadline
- Jan 3, 2023
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Answering about CVE-2022-26501 ·
Questions about CVE-2022-26501
Is CVE-2022-26501 being exploited?
Yes. CISA added CVE-2022-26501 to its Known Exploited Vulnerabilities catalog on Dec 13, 2022, which means there is reliable evidence of real-world attacks, including by ransomware groups.
How do I fix CVE-2022-26501?
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-2022-26501?
Only if you use Veeam Backup & Replication. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.