CVE-2021-43043
mediumpriority · track · 27EPSS 0.015 · 73 %ileEUUSgrimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.46% (73rd) EPSS
CVSS 4 · medium
Who says so?
3 sources
cnnvd · enisa_euvd · nvd
EPSS · scored 2026-10-27
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The apache user could read arbitrary files such as /etc/shadow by abusing an insecure Sudo rule.
01
cvss
Technical severity, 0–10. One row per scoring source.
6.5
010
base score 0–10 · higher = more severe · hover a vector to decode
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6
02
weaknesses
The CWE weakness classes this flaw belongs to.
CWE-269USLLM-inferred
03
affected products (2)
Products and version ranges known to be affected.
04
also known as (3)
Other names and identifiers for this entity.
05
sources
Which sources assert this record, and when.
06
references (9)
External citations — patches, advisories, analysis.
- https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961cnnvd
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1cnnvd
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2cnnvd
- https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961enisa_euvd
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1enisa_euvd
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2enisa_euvd
- https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961Vendor Advisorynvd
- https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1ExploitThird Party Advisorynvd
scry
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