High severity8.1NVD Advisory· Published Jun 3, 2020· Updated Jun 17, 2026

CVE-2020-3257

Description

Multiple vulnerabilities in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) that are running Cisco IOS Software could allow an attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Cisco iOS2 versions
cpe:2.3:o:cisco:ios:15.8\(3.0z\)m1:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ios:15.8\(3.0z\)m1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.9:*:*:*:*:*:*:*
Cisco Systems, Inc./809 and 829 Industrial Integrated Services Routersllm-fuzzy
Cisco Systems, Inc./1000 Series Connected Grid Routersllm-fuzzy
Cisco Systems, Inc./iOS Xr Softwarellm-fuzzy
Cisco/Cisco IOS 12.2(60)EZ16v5
Range: n/a

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-iot-gos-vuln-s9qS8kYLnvdPatchVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.526
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000