[NEW] [medium] Cisco Industrial Ethernet 1000 Series Switches: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Cisco Industrial Ethernet Switches to perform denial of service attacks or cross-site scripting attacks.
CSIRTS triage
- What
- Multiple vulnerabilities enable denial-of-service attacks and cross-site scripting attacks on Industrial Ethernet switches.
- Who is affected
- Organizations operating Cisco Industrial Ethernet 1000 Series Switches.
- Urgency
- Medium priority; while XSS and DoS are concerning for industrial environments, there is no indication of remote unauthenticated code execution.
- Action
- Apply Cisco security updates addressing CVE-2026-20177 and CVE-2026-20232.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2931
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-201770.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-202320.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-20177 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-20232 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- mediumCVE-2026-20232: A vulnerability in the web-based management interface of Cisco Industrial Ethernet (IE) 1000 S…nvd
- mediumCVE-2026-20177: A vulnerability in the handling of management plane packets by Cisco Industrial Ethernet (IE) …nvd
- criticalCisco Advance Notification for Publication of August 19, 2026, Security Advisoriescisco-psirt
- highCisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerabilitycisco-psirt
- mediumCisco Industrial Ethernet 1000 Series Switches Stored Cross-Site Scripting Vulnerabilitycisco-psirt
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