CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2020-5135
Critical (9.8) in SonicWall SonicOS. In CISA KEV since 2022-03-15, with known ransomware use. EPSS 27% chance of exploitation in the next 30 days.
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. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
Severity
- EPSS
- 27% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2022-03-15, due 2022-04-05, known ransomware use
- CWE
- CWE-120
- Published
- Modified
- Record from
- the NVD, synced
Affected
- sonicwall:sonicos
- sonicwall:sonicosv