AUGUST 4, 2026
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Case File

CVE-2021-22915

CRITICAL · CVSS 9.8 EPSS 1.74%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-11 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2021-22915
Severity
CRITICAL
CVSS
9.8
EPSS
1.74%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)