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CVE-2020-3594

25
FAUCET Score

CVE-2020-3594 describes a privilege escalation vulnerability in Cisco SD-WAN Software, allowing an authenticated local attacker to gain root privileges on the underlying operating system due to insufficient input validation. This high-severity vulnerability (CVSS 7.8) requires local access and low privileges, but once exploited, grants full control over the affected system. While no public exploits, Metasploit modules, or community discussions have been identified, organizations using Cisco SD-WAN should still address this vulnerability to mitigate potential risks.

Impacted Technologies

VendorProductVersion(s)CPE
< 20.1.2CPE matchmatch criteria
cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
>= 20.3, < 20.3.2CPE matchmatch criteria
cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 57th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-vepestd-8C3J9Vc
PatchVendor Advisory