VulnerabilityModified
CVE-2021-20027
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request.
HIGH 7.5EPSS 1.29%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.29% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- sonicwall/sonicos
- Source
- PSIRT@sonicwall.com
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016Mitigation, Vendor Advisory
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.