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CISA Warns 18-Year-Old Cisco IOS Vulnerability Exploited for Arbitrary Command Execution

Cyber Press
Cyber Press
Published July 14, 2026Original Report

Excerpt

CISA has added an 18-year-old Cisco IOS vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation of a flaw first disclosed in 2008. The vulnerability, tracked as CVE-2008-4128 , affects Cisco IOS 12.4 and demonstrates that decades-old flaws in legacy network infrastructure remain viable attack vectors when devices go unpatched. 18-Year-Old Cisco IOS Vulnerability Exploited CVE-2008-4128 is a Cross-Site Request Forgery (CSRF)…

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Attack Flow5 steps · MITRE ATT&CK mapped

Initial AccessTA0001T1190
1/5
Exploit Public-Facing Application
ActionExploit vulnerable interface
Attackers exploit a Cross-Site Request Forgery (CSRF) vulnerability in the HTTP management interface of Cisco IOS 12.4.

Indicators of Compromise

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2008-4128MediumScore 51/100First seen

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