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CISA Flags Linux Kernel Vulnerability as Threat Actors Launch Attacks

ATT&CK techniques detected

2 predictions

T1068Exploitation for Privilege Escalation

99%

“attacker to escalate their privileges on a compromised linux system easily. if a threat actor gains initial, low - level access to a machine through phishing or a separate exploit, they can trigger this kernel flaw to bypass standard security boundaries. by successfully transferr…”

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T1068Exploitation for Privilege Escalation

95%

“cisa flags linux kernel vulnerability as threat actors launch attacks the cybersecurity and infrastructure security agency ( cisa ) has officially added a high - severity linux kernel vulnerability to its known exploited vulnerabilities ( kev ) catalog. tracked as cve - 2026 - 31…”

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Summary

The Cybersecurity and Infrastructure Security Agency (CISA) has officially added a high-severity Linux kernel vulnerability to its Known Exploited Vulnerabilities (KEV) catalog. Tracked as CVE-2026-31431, this flaw is currently being exploited in the wild by threat actors. This active exploitation has prompted urgent patching mandates for federal agencies and strong recommendations for private organizations worldwide. […]

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