CVE-2021-43041
HIGHCVSS 8.8/10EPSS 2.29%
Last modified
CVE-2021-43041 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A crafted HTTP request could induce a format string vulnerability in the privileged vaultServer application.. EPSS estimates a 2.29% chance of exploitation in the next 30 days.
Description
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A crafted HTTP request could induce a format string vulnerability in the privileged vaultServer application.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kaseya | Unitrends Backup | >= 10.0, < 10.5.5 |
References
- https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961Vendor Advisory
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1Exploit, Third Party Advisory
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2Exploit, Third Party Advisory
- https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961Vendor Advisory
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1Exploit, Third Party Advisory
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43041?
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A crafted HTTP request could induce a format string vulnerability in the privileged vaultServer application.
How severe is CVE-2021-43041?
CVE-2021-43041 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.29% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43041?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-43041?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST