CVE-2026-118527
· Source CISA KEV
Summary
CVE-2026-118527 is a vulnerability in Ivanti Connect Secure. CISA added it to the Known Exploited Vulnerabilities catalog on October 30, 2026, which means exploitation in the wild has been confirmed; US federal agencies must remediate it by November 13, 2026. CISA does not currently list it as used in ransomware campaigns. Ivanti has 38 vulnerabilities in the KEV catalog, 12 of them linked to ransomware.
All 38 known-exploited Ivanti vulnerabilities →Description
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.
CISA Known-Exploited Vulnerability
Product: Ivanti — Connect Secure
Name: Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability
Date added: 2026-10-30 · Due: 2026-11-13
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.