Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since July 13, 2026.
CVE-2008-4128
Cisco IOS Cross-Site Request Forgery Vulnerability
Added to KEV July 13, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2008-4128
- CWE
- CWE-352
- Affected products
- IOS · Cisco IOS · Cisco
What happened
Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI.
What it means for your business
Cisco IOS is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2008-4128). Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. CISA remediation due date: 2026-07-16. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: July 16, 2026
Sources
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