CVE-2021-34700

Cisco SD-WAN vManage Software Information Disclosure Vulnerability

MEDIUM
5.5
CVSS Score
Published: July 22, 2021 at 03:20 PM UTC
Updated: June 17, 2026 at 03:56 AM UTC
2 products affected across 1 vendorCatalyst Sd WAN ManagerCisco SD-WAN vManage

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A vulnerability in the CLI interface of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to read arbitrary files on the underlying file system of an affected system. This vulnerability exists because access to sensitive information on an affected system is not sufficiently controlled. An attacker could exploit this vulnerability by gaining unauthorized access to sensitive information on an affected system. A successful exploit could allow the attacker to create forged authentication requests and gain unauthorized access to the web UI of an affected system.

Affected

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

20.5.0 ≤ v < 20.5.1
Affected range stops below 20.5.1, so it looks safe — our inference, not a vendor statement
v < 20.4.2
Affected range stops below 20.4.2, so it looks safe — our inference, not a vendor statement

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

5.5MEDIUMcisco
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-522

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