CVE entry · CVE-2026-118527
CVE-2026-118527: Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability
Ivanti Connect Secure contains a generation of predictable numbers or identifiers vulnerability that allows a remote authenticated attacker to upload files with attacker-controlled content to a known location on disk. This vulnerability can be chained with CVE-2026-104935 and CVE-2026-111357.
- Actively exploited: added to CISA’s KEV catalog on October 30, 2026.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: November 13, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes Ivanti Connect Secure, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
Other Ivanti vulnerabilities
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Ivanti Connect Secure Missing Authentication for Critical Function Vulnerability
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Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability
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Ivanti Sentry OS Command Injection Vulnerability
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Ivanti Endpoint Manager Mobile (EPMM) Improper Input Validation Vulnerability
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Ivanti Endpoint Manager Mobile (EPMM) Code Injection Vulnerability
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Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability