CVE-2021-22915
moderate-risk
Published 2021-06-11
Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.
Do I need to act?
-
0.49% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: ea6649a511ec5963b984342a50103c3637d621a3, 6e537422555592ba6542780533963a67fff68cf1, 59752ce269dfb122ef9e3ae56c33464551aa74e1
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (3)
Affected Vendors
References (8)
Permissions Required
https://hackerone.com/reports/1154003
Permissions Required
https://hackerone.com/reports/1154003
43
/ 100
moderate-risk
Severity
32/34 · Critical
Exploitability
2/34 · Minimal
Exposure
9/34 · Low