CVE-2020-5135 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 26.9% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2022-04-05.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 26.87% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-120 |
| On CISA KEV | yes — remediate by 2022-04-05 |
| Public exploit | none known |
| Published | 2020-10-12 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | SonicWall SonicOS Buffer Overflow Vulnerability |
|---|---|
| Added | 2022-03-15 |
| Due | 2022-04-05 |
| Vendor / product | SonicWall / SonicOS |
| Ransomware use | known |
Affected (2)
| Vendor | Product |
|---|---|
| sonicwall | sonicos |
| sonicwall | sonicosv |
References
→ the Explorer · watch your stack · NVD