CVE-2020-3372

Cisco SD-WAN vManage Software Denial of Service Vulnerability

MEDIUM
6.5
CVSS Score
Published: July 16, 2020 at 05:21 PM UTC
Updated: June 17, 2026 at 03:18 AM UTC
13 products affected across 1 vendorSd WAN Firmware1100-4G Integrated Services Router1100-6G Integrated Services Router

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to consume excessive system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a large number of crafted HTTP requests to the affected web-based management interface. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and could result in a DoS condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 19.2.320.1.0 ≤ v < 20.1.12
Affected range stops below 19.2.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 20.1.12, so it looks safe — our inference, not a vendor statement
cisco-1100-4g-integrated-services-router (environment) · cisco-1100-4gltegb-integrated-services-router (environment) · cisco-1100-4gltena-integrated-services-router (environment) · cisco-1100-6g-integrated-services-router (environment) · cisco-vedge-100 (environment) · cisco-vedge-1000 (environment) · cisco-vedge-100b (environment) · cisco-vedge-100m (environment) · cisco-vedge-100wm (environment) · cisco-vedge-2000 (environment) · cisco-vedge-5000 (environment)
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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