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CVE-2026-118527

Predictable identifiers in Ivanti Connect Secure enable file upload

CISA: Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability

CVSS
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EPSS
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Published
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Added to KEV
Analyze CVE-2026-118527 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Ivanti Connect Secure uses predictable numbers or identifiers so a remote authenticated attacker can upload attacker-controlled files to a known path on disk. The issue can be chained with CVE-2026-104935 and CVE-2026-111357. It is being exploited in the wild. Affected product versions are not listed.

What to do: Apply Ivanti's mitigations for CVE-2026-118527 per vendor instructions and CISA BOD 26-04. If mitigations are unavailable, discontinue use of the product.

ProductAffected
Ivanti Connect Secure—
Estimated exposure
No basis for an estimate.

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description · NVD

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.

KEVCISA Known Exploited Vulnerability
Affected
Ivanti Connect Secure
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.
Due date
Ransomware use
Unknown
Vendors
Ivanti
Products
Connect Secure
Weakness
CWE-340

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