CVE-2021-43040
HighPublic PoC
Published: 06 December 2021
Published
06 December 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0074
73.3th percentile
Risk Priority
18
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-43040 is a high-severity an unspecified weakness vulnerability in Kaseya Unitrends Backup. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 26.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-29994
Vulnerability details
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The privileged vaultServer could be leveraged to create arbitrary writable files, leading to privilege escalation.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
kaseya
unitrends backup
10.0 — 10.5.5
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.