CVE-2020-3387

highpriority · track · 40EPSS 0.130 · 96 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

13.0% (96th) EPSS

CVSS 9 · high

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to execute code with root privileges on an affected system. The vulnerability is due to insufficient input sanitization during user authentication processing. An attacker could exploit this vulnerability by sending a crafted response to the Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to access the software and execute commands they should not be authorized to execute.

remediations

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

No fix is available; mitigate or reduce exposure.

No fix availableCisco Catalyst SD-WAN Managercisco_csaf
No remediation is available at this time.

cvss

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

9.0

010

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

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 1.6 · impact 5.9

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US

v3.17.5highAV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

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-20USprimaryCWE-20US

affected products (7)

Products and version ranges known to be affected.

Cisco Cisco Catalyst SD-WAN Managerall versionscisco_csafUS
Cisco Cisco SD-WAN vManage≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco SD-WAN≤ 19.2.3fstec_bduRU
Cisco Systems Inc. Cisco SD-WAN≤ 20.1.1.1fstec_bduRU
cisco sd-wan firmware≤ 18.3.0nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*
cisco sd-wan firmware18.4.0 → 19.2.3nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*
cisco sd-wan firmware19.3.0 → 20.1.1.1nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-vmanrce-4jtWT28PCisco SD-WAN vManage Software Remote Code Execution Vulnerability2020-07-15csaf · cisco_csafUS
A vulnerability in Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to execute code with root privileges on an affected system. The vulnerability is due to insufficient input sanitization during user authentication processing. An attacker could exploit this vulnerability by sending a crafted response to the Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to access the software and execute commands they should not be authorized to execute. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2020-07-16modified 2026-06-17

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+25188 more

references (9)

External citations — patches, advisories, analysis.

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