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.
Other sources
Use of predictable filenames in Ivanti Connect Secure before versions 25.1.1.3 and 22.8R2.6 allows a remote authenticated attacker to upload files with attacker-controlled content to a known location on disk.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Ivanti Connect Secureto a version that resolves this vulnerability.Fixed in 25.1.1.3 - Upgrade
Upgrade
Ivanti Connect Secureto a version that resolves this vulnerability.Fixed in 22.8R2.6 - Compensating control
If mitigations are unavailable, discontinue use of Ivanti Connect Secure.