CVE-2022-26500 Veeam Backup & Replication: file path flaw
In plain words: The program can be tricked into reading or writing files outside the folder it should stay in. Leaks files such as passwords and settings, or overwrites important ones.
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
- File path flaw (CWE-22)
- 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-2022-26500 ·
Questions about CVE-2022-26500
Is CVE-2022-26500 being exploited?
Yes. CISA added CVE-2022-26500 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-2022-26500?
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-2022-26500?
Only if you use Veeam Backup & Replication. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.