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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
The EPSS history of this vulnerability is building up: the chart will appear in a few days.
Exploitation signals 1 / 5
- KEV catalog (CISA)30 Oct 2026
- Exploited in EUVD (ENISA)no
- Used by ransomwareno
- EPSS above 10 %—
- No account, over the networkunknown
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: 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.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
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.
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Added to the KEV catalog
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CISA remediation due date
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-111357Ivanti Connect Secure Missing Authentication for Critical Function Vulnerability4.0 · Rising fast
- CVE-2026-104935Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability8.4 · Rising fast
- CVE-2026-10520Ivanti Sentry OS Command Injection Vulnerability9.4 · Actively exploited
- CVE-2026-6973Ivanti Endpoint Manager Mobile (EPMM) Improper Input Validation Vulnerability5.7 · Actively exploited
- CVE-2026-1603Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability8.5 · Background exploitation
- CVE-2026-1340Ivanti Endpoint Manager Mobile (EPMM) Code Injection Vulnerability9.3 · Background exploitation