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CVE-2020-3216

23
FAUCET Score

CVE-2020-3216 is a vulnerability in Cisco IOS XE SD-WAN Software that allows an unauthenticated, physical attacker to bypass authentication and gain unrestricted root shell access. The vulnerability stems from insufficient authentication mechanisms for specific commands, exploitable by stopping the device's boot initialization. This is a medium-severity vulnerability (CVSS 6.8) requiring physical access (AV:P) but with low attack complexity (AC:L), leading to high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
16.9.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe_sd-wan:16.9.0:*:*:*:*:*:*:*
16.9.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe_sd-wan:16.9.1:*:*:*:*:*:*:*
16.9.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe_sd-wan:16.9.2:*:*:*:*:*:*:*
16.9.3CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe_sd-wan:16.9.3:*:*:*:*:*:*:*
16.9.4CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe_sd-wan:16.9.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 72nd percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-auth-b-NzwhJHH7
Vendor Advisory