Exploited vulnerability · CISA KEV

Is CVE-2026-118527 exploited? Yes: in CISA KEV since 30 Oct 2026

Gociux · Ivanti Connect Secure · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-118527, Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 30 Oct 2026. It affects Ivanti Connect Secure, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: 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.

What it is

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.

What to do

1. Check whether you run it. Look for Connect Secure in your asset inventory, including appliances and cloud images. Stack check lists every exploited Ivanti CVE at once.
2. Apply the fix. 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.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 3 Nov 2026.
4. Get told next time. Email alerts when CISA adds a CVE for Ivanti.

Other exploited CVEs in Connect Secure

• CVE-2026-111357: Ivanti Connect Secure Missing Authentication for Critical Function Vulnerability (30 Oct 2026)
• CVE-2026-104935: Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability (13 Oct 2026)

References

• hub.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-
• nvd.nist.gov/vuln/detail/CVE-2026-118527

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2026 · Ivanti scorecard · act-now radar.