CVE-2020-5135 · netVigilance record NV22-0193
SonicWall SonicOS Buffer Overflow
past due ransomware
What to do
Apply updates per vendor instructions.
CISA deadline 2022-04-05 · passed 4 years 5 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall.
Who is affected
SonicWall SonicOS. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-120.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 years 5 months ago
Sources
- NVD entry for CVE-2020-5135 nvd.nist.gov/vuln/detail/CVE-2020-5135
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2020-5135