Cisco IOS's Multiple Cross-Site Request Forgery Flaws Allow Remote Attackers to Execute Arbitrary Commands via Show Privilege and Alias Exec Requests; CISA's July 16th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2008-4128

Key Details

CVE	CVE-2008-4128
Vulnerability Name	Cisco IOS Cross-Site Request Forgery Vulnerability
Affected products	Cisco IOS
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-352 (Cross-Site Request Forgery (CSRF))
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-07-13.
Exploitation prediction (EPSS)	33.87% probability of exploitation in the next 30 days (98% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-07-16 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Cisco	IOS

Vendor

Product

Affected Versions

Patch Status

Cisco

IOS

Subsystems	Industrial Network - Routers/Firewalls
Sectors	Critical Manufacturing, Energy, Transportation Systems, Water and Wastewater Systems

What to Know

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 to Do

Monitor Cisco's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2008-4128
CVE	https://www.cve.org/CVERecord?id=CVE-2008-4128

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2008-4128

CVE

https://www.cve.org/CVERecord?id=CVE-2008-4128

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-07-13
Required Action Due Date	2026-07-16
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-07-13

Required Action Due Date

2026-07-16

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.