CISA Warns of Decades-Old Cisco IOS Vulnerability Actively Exploited in Attacks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning that attackers are actively exploiting CVE-2008-4128, a cross-site request forgery (CSRF) vulnerability affecting Cisco IOS versions 12.4(12) and 12.4(4). This vulnerability was added to CISA’s Known Exploited Vulnerabilities Catalog on July 13, 2026, underscoring that even legacy networking flaws can pose security risks […]

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