How severe is CVE-2021-1514?

CVE-2021-1514 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-1514 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1514?

CVE-2021-1514 primarily affects Cisco Catalyst Sd-wan Manager. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-1514?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-1514 published?

CVE-2021-1514 was published on 2021-05-06 and last updated on 2026-06-17.

CVE-2021-1514

CVE-2021-1514 is a high-severity vulnerability in Cisco Catalyst Sd-wan Manager with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Cisco Catalyst Sd-wan Manager
Published: 2021-05-06
Last modified: 2026-06-17

Description

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with Administrator privileges on the underlying operating system. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the CLI. The attacker must be authenticated as a low-privileged user to execute the affected commands. A successful exploit could allow the attacker to execute commands with Administrator privileges.

Frequently asked questions

What is CVE-2021-1514?: A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with Administrator privileges on the underlying operating system. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the CLI. The attacker must be authenticated as a low-privileged user to execute the affected commands. A successful exploit could allow the attacker to execute commands with Administrator privileges.
How severe is CVE-2021-1514?: CVE-2021-1514 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-1514 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1514?: CVE-2021-1514 primarily affects Cisco Catalyst Sd-wan Manager. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-1514?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-1514 published?: CVE-2021-1514 was published on 2021-05-06 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-QVszVUPy

Affected products (13)

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:*:*:*:*:*:*:*:*

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