CVE-2021-1528

highpriority · track · 31EPSS 0.002 · 16 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (16th) EPSS

CVSS 7.2 · high

Is it mine?

28 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisco_csaf · nvd

EPSS · scored 2026-10-27

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated privileges on an affected system. This vulnerability exists because the affected software does not properly restrict access to privileged processes. An attacker could exploit this vulnerability by invoking a privileged process in the affected system. A successful exploit could allow the attacker to perform actions with the privileges of the root user.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Catalyst SD-WANcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Catalyst SD-WAN Managercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vContainercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vEdge Cloudcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vEdge Routercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-250US

affected products (28)

Products and version ranges known to be affected.

Cisco Cisco Catalyst SD-WANall versionscisco_csafUS
Cisco Cisco Catalyst SD-WAN Managerall versionscisco_csafUS
Cisco Cisco SD-WAN vContainerall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Cloudall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Routerall versionscisco_csafUS
Cisco Cisco SD-WAN Solution≤ n/aenisa_euvdEU
cisco catalyst sd-wan manager20.4 → 20.4.2nvdUScpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
cisco catalyst sd-wan manager20.5 → 20.5.1nvdUScpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
cisco sd-wan vbond orchestrator20.4 → 20.4.2nvdUScpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
cisco sd-wan vbond orchestrator20.5 → 20.5.1nvdUScpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
cisco vedge 100 firmware20.4 → 20.4.2nvdUScpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cisco vedge 100 firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cisco vedge 1000 firmware20.4 → 20.4.2nvdUScpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cisco vedge 1000 firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cisco vedge 100b firmware20.4 → 20.4.2nvdUScpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*
cisco vedge 100b firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*
cisco vedge 100m firmware20.4 → 20.4.2nvdUScpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:*
cisco vedge 100m firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:*
cisco vedge 100wm firmware20.4 → 20.4.2nvdUScpe:2.3:o:cisco:vedge_100wm_firmware:*:*:*:*:*:*:*:*
cisco vedge 100wm firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100wm_firmware:*:*:*:*:*:*:*:*

showing 20 of 28

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-sd-wan-fuErCWwFCisco SD-WAN Software Privilege Escalation Vulnerability2021-06-02csaf · cisco_csafUS
A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated privileges on an affected system. This vulnerability exists because the affected software does not properly restrict access to privileged processes. An attacker could exploit this vulnerability by invoking a privileged process in the affected system. A successful exploit could allow the attacker to perform actions with the privileges of the root user. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisco_csaf nvd NVD CVE.org MITRE

published 2021-06-04modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan