CVE-2020-3264

mediumpriority · track · 28EPSS 0.007 · 54 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.73% (54th) EPSS

CVSS 6.6 · medium

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 Solution software could allow an authenticated, local attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access and make changes to the system that they are not authorized to make.

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-WANcisco_csaf
No remediation is available at this time.

cvss

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

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.1

v2.06.6mediumAV:L/AC:L/Au:N/C:C/I:C/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 9.2

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 5.2

v3.07.1highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.07.1highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · psirt@cisco.com USexploitability 1.8 · impact 5.2

v3.07.1highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · Cisco PSIRT US

v3.17.1highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/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-120USprimaryCWE-119USCWE-119US

affected products (7)

Products and version ranges known to be affected.

Cisco Cisco Catalyst SD-WANall versionscisco_csafUS
Cisco Cisco SD-WAN Solution≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco SD-WAN≤ 19.2.2fstec_bduRU
cisco sd-wan firmware< 18.4.5nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*
cisco sd-wan firmware19.2.0 → 19.2.2nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*
cisco sd-wan firmware= 20.1.0nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*
cisco sd-wan firmware= 20.3.0nvdUScpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-sdwanbo-QKcABnS2Cisco SD-WAN Solution Buffer Overflow Vulnerability2020-03-18csaf · cisco_csafUS
A vulnerability in Cisco SD-WAN Solution software could allow an authenticated, local attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access and make changes to the system that they are not authorized to make. 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 2020-03-19modified 2026-06-17

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references (9)

External citations — patches, advisories, analysis.

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