Buffer overflow in SonicWall Sonicos
CVE-2020-5136
A buffer overflow vulnerability in SonicOS allows an authenticated attacker to cause Denial of Service (DoS) in the SSL-VPN and virtual assist portal, which leads to a firewall crash. This vulnerability affected SonicOS Gen 5 version 5.9.1.7, 5.9.1.13, 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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.011 (65.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- SonicWall Sonicos — versions SonicOS 5.9.1.13-5n and earlier, SonicOS 6.5.4.7-79n and earlier, 7.0.0.0
- SonicWall Sonicosv
Weakness classification (CWE)
References
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0011 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-5136?
- CVE-2020-5136 is a medium-severity vulnerability in SonicWall Sonicos, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2020-10-12.
- How severe is CVE-2020-5136?
- Medium severity. CVSS v3 base score is 6.5 out of 10.