Out-of-bounds Read in Sonicwall Sonicos
CVE-2020-5140
A vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service by sending a malicious HTTP request that leads to memory addresses leak. This vulnerability affected SonicO…
Vulnerability class: Buffer Overflow
EPSS: 0.018 (75.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
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@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-5140?
- CVE-2020-5140 is a high-severity vulnerability in Sonicwall Sonicos, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2020-10-12.
- How severe is CVE-2020-5140?
- High severity. CVSS v3 base score is 7.5 out of 10.