What is the CVSS score of CVE-2021-1512?

CVE-2021-1512 has a CVSS 3.1 base score of 6.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H. EPSS exploitation probability: 0.2%.

Catalyst Sd Wan Manager CVE-2021-1512

MEDIUM

Files or Directories Accessible to External Parties (CWE-552)

2021-05-06 psirt@cisco.com

Information Disclosure Path Traversal Cisco Catalyst Sd Wan Manager Vedge 100 Firmware Vedge 100B Firmware Vedge 100M Firmware Vedge 100Wm Firmware Vedge 1000 Firmware Vedge 2000 Firmware Vedge 5000 Firmware Sd Wan Vmanage Sd Wan Vbond Orchestrator Vedge Cloud Firmware Vsmart Controller Firmware

6.0

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-552 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V5 - File Handling File access restriction MITRE ATT&CK 2 techniques across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.0 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-552. A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system of an affected system. This vulnerability is due to insufficient validation of the user-supplied input parameters of a specific CLI command. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content in any arbitrary files that reside on the underlying host file system. Affected products include: Cisco Catalyst Sd-Wan Manager, Cisco Sd-Wan Vbond Orchestrator, Cisco Sd-Wan Vmanage, Cisco Vsmart Controller Firmware, Cisco Vedge 100 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.0 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

DescriptionNVD

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system of an affected system. This vulnerability is due to insufficient validation of the user-supplied input parameters of a specific CLI command. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content in any arbitrary files that reside on the underlying host file system.

Threat Intelligence Overview

EPSS Score

0.2%

Top 86% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +30

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Path Traversal HIGH

Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*

cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:-:*:*:*:*:*:*:*

cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vsmart_controller_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_100_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_1000_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_100b_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_100m_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_100wm_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_2000_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_5000_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge-100b_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:cisco:vedge_cloud_firmware:-:*:*:*:*:*:*:*

More in Catalyst Sd Wan Manager

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10.0 Feb 25

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9.1 Aug 03

A vulnerability in the request authentication validation for the REST API of Cisco SD-WAN vManage software could allow a

CVE-2026-20126 HIGH This Week

8.8 Feb 25

Catalyst Sd-Wan Manager contains a vulnerability that allows attackers to an authenticated, local attacker with low priv

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A vulnerability in the binding configuration of Cisco SD-WAN vManage Software containers could allow an unauthenticated,

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References

Advisories & patches

ADVISORY https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-arbfile-7Qhd9mCn

Search Externally

GitHub PoC

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