7.5

CVE-2020-5137: sonicwall sonicos Classic Buffer Overflow

CVSS: 7.5v3.1HighModified
Published 12-10-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-5137 is a high (CVSS 7.5) Classic Buffer Overflow vulnerability in sonicwall sonicos. EPSS estimates a 1.75% chance of exploitation in the next 30 days, higher than 77.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.75%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A buffer overflow vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service and leads to 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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.75%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.75% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.75%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Sonicwall2 products
  • sonicosSonicOS 6.5.4.7-79n and earlier | SonicOS 5.9.1.7-2n and earlier | SonicOS 5.9.1.13-5n and earlier | SonicOS 6.5.1.11-4n and earlier | SonicOS 6.0.5.3-93o and earlier | SonicOSv 6.5.4.4-44v-21-794 and earlier | SonicOS 7.0.0.0-1 | ≤ 5.9.1.13 | ≥ 6.0.0.0, ≤ 6.0.5.3 | ≥ 6.5.0.0, ≤ 6.5.1.11 | ≥ 6.5.4.0, ≤ 6.5.4.7 | 7.0.0.0
  • sonicosv≤ 6.5.4.4

1 vendor · 2 products

References

1 links