Vulnerability-Lookup

VAR-202010-1187

Vulnerability from variot - Updated: 2023-12-18 14:00

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS 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. SonicOS Contains a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. SonicWall SonicOS is a set of operating system specially designed for SonicWall firewall equipment of SonicWall Company in the United States

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CVE-2020-5135 (GCVE-0-2020-5135)

Vulnerability from cvelistv5 – Published: 2020-10-12 10:40 – Updated: 2025-10-21 23:35

Summary

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 19:55 UTC

CWE

CWE-120 - Buffer Copy without Checking Size of Input

Assigner

sonicwall mitre root

References

2 references

URL	Tags
https://psirt.global.sonicwall.com/vuln-detail/SN…	x_refsource_CONFIRM
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
SonicWall	SonicOS	Affected: SonicOS 6.5.4.7-79n and earlier Affected: SonicOS 6.5.1.11-4n and earlier Affected: SonicOS 6.0.5.3-93o and earlier Affected: SonicOSv 6.5.4.4-44v-21-794 and earlier Affected: SonicOS 7.0.0.0-1

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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VAR-202010-1187

CVE-2020-5135 (GCVE-0-2020-5135)

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