CVE-2021-20028
Published: March 28, 2022
Official Description
SonicWall Secure Remote Access (SRA) products contain an improper neutralization of a SQL Command leading to SQL injection.
CISA KEV Advisory
SonicWall Secure Remote Access (SRA) SQL Injection Vulnerability
SonicWall Secure Remote Access (SRA) products contain an improper neutralization of a SQL Command leading to SQL injection.
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
SonicWall Secure Remote Access (SRA) products are susceptible to SQL injection due to improper neutralization of SQL commands. This high-severity flaw has a very high EPSS score of 0.85685, indicating a strong likelihood of exploitation.
This vulnerability has been actively exploited in the wild and is listed in CISA's KEV catalog. Attackers are actively leveraging this flaw.
It is critical to apply all available patches and updates for SonicWall Secure Remote Access products. Additionally, implement robust input validation and parameterized queries to prevent SQL injection attacks.
Technical Analysis
CVE-2021-20028 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-20028 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-20028 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1