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CVE-2020-3234

21
FAUCET Score

CVE-2020-3234 is a critical vulnerability affecting Cisco 809, 829 Industrial ISRs, and 1000 Series Connected Grid Routers running Cisco IOS Software. It allows a low-privileged, authenticated local attacker to gain root access to the Virtual Device Server's Linux shell via hard-coded default credentials on the virtual console. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.2\(60\)ez16CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(60\)ez16:*:*:*:*:*:*:*
15.0\(2\)sg11aCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(2\)sg11a:*:*:*:*:*:*:*
15.3\(3\)jaa1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.3\(3\)jaa1:*:*:*:*:*:*:*
15.3\(3\)jpjCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.3\(3\)jpj:*:*:*:*:*:*:*
15.4\(1\)cgCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(1\)cg:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 64th percentile among its peer group of 16,994 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-ios-iot-vds-cred-uPMp9zbY
PatchVendor Advisory