Russian Hackers Target US Critical Infrastructure via Cisco Vulnerability

Thursday, Aug 21, 2025 3:46 am ET1min read

The FBI and Cisco have warned of Russian hackers targeting critical infrastructure in the US by exploiting a vulnerability in older Cisco software. Hackers associated with Russia's FSB Center 16 have extracted device configuration information, which can be used to access industrial control systems. Thousands of networking devices have been targeted, with the highest numbers in the telecommunications, education, and manufacturing sectors.

The FBI and Cisco have issued a joint warning about a sophisticated cyber espionage campaign orchestrated by Russian hackers targeting critical infrastructure in the United States. The hackers, believed to be associated with Russia's Federal Security Service (FSB) Center 16 unit, are exploiting a seven-year-old vulnerability in Cisco IOS software to gain unauthorized access to thousands of networking devices across various sectors [1].

The campaign centers around CVE-2018-0171, a previously disclosed vulnerability in Cisco's Smart Install feature that allows unauthenticated remote attackers to execute arbitrary code or trigger denial-of-service conditions. Despite Cisco releasing patches in 2018, many organizations have failed to apply these updates, leaving their devices vulnerable [1].

The targeted sectors include telecommunications, higher education, and manufacturing, with a significant number of devices compromised in North America, Asia, Africa, and Europe [1]. The FBI has detected the hackers collecting configuration files for thousands of networking devices associated with U.S. entities across critical infrastructure sectors [2].

The extracted configuration information often contains sensitive credentials and Simple Network Management Protocol (SNMP) community strings, which the hackers use to pivot laterally through network environments and gain deeper access. The ultimate goal appears to be long-term espionage rather than immediate financial gain, with a particular focus on industrial control systems [1].

The hacking unit linked to the activity has been operating for at least a decade, and its operations have significantly escalated following the Russia-Ukraine conflict. Cisco Talos analysts have noted the group's advanced knowledge of network infrastructure and the deployment of bespoke exploitation tools [1].

Organizations are advised to prioritize patching their network devices and implementing robust security measures to mitigate the risk of such attacks. The FBI and Cisco have warned that the access granted by these vulnerabilities can enable reconnaissance and potential long-term control of critical infrastructure systems [2].

References:
[1] https://cybersecuritynews.com/russian-hackers-exploiting-7-year-old-cisco-vulnerability/
[2] https://economictimes.indiatimes.com/news/international/global-trends/fbi-warns-of-russian-hacks-targeting-us-critical-infrastructure/articleshow/123420974.cms

Russian Hackers Target US Critical Infrastructure via Cisco Vulnerability

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