Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabilities

published 2020-06-03 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24528

cvss: 8.1; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

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.

Patch / fix

links 1

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios… advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-15)

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	8.1	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD	3.1	8.1	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD	2.0	4.8	AV:A/AC:L/Au:N/C:N/I:P/A:P

Affected products

Cisco Cisco IOS 12.2(60)EZ16

Classification

Weakness

CWE-20 Improper Input Validation
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Technology feeds

Cisco IOS rss critical rss

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-iot-gos-vuln-s9qS8kYL
vendor-advisory, patch

Sources

CVE List CVE-2020-3257
NVD CVE-2020-3257

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary