What is CVE-2021-20024?

CVE-2021-20024 is a high-severity vulnerability in SonicWall Switch, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2021-07-09.

How severe is CVE-2021-20024?

High severity. CVSS v3 base score is 8.1 out of 10.

Out-of-bounds Read in SonicWall Switch

CVE-2021-20024

Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (46.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Sonicwall Switch — versions 1.0.0.5-16 and earlier
Sonicwall Switch
Sonicwall Sws12-10fpoe
Sonicwall Sws12-8
Sonicwall Sws12-8poe
Sonicwall Sws14-24
Sonicwall Sws14-24fpoe
Sonicwall Sws14-48
Sonicwall Sws14-48fpoe

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20024?: CVE-2021-20024 is a high-severity vulnerability in SonicWall Switch, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2021-07-09.
How severe is CVE-2021-20024?: High severity. CVSS v3 base score is 8.1 out of 10.