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Exploited vulnerability · CISA KEV

Is CVE-2026-1603 exploited? Yes: in CISA KEV since 9 Mar 2026

Gociux · Ivanti Endpoint Manager (EPM) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-1603, Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 9 Mar 2026, 27 days after it was published. It affects Ivanti Endpoint Manager (EPM). If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 9 Mar 2026
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.6CVSS 3.1 · high
US federal due23 Mar 2026BOD 22-01 deadline

What it is

Ivanti Endpoint Manager (EPM) contains an authentication bypass using an alternate path or channel vulnerability that could allow a remote unauthenticated attacker to leak specific stored credential data.

VendorIvanti (38 exploited CVEs in KEV)
ProductEndpoint Manager (EPM)
VulnerabilityIvanti Endpoint Manager (EPM) Authentication Bypass Vulnerability
WeaknessCWE-288
Published10 Feb 2026
Added to KEV9 Mar 2026
Reported by (CNA)ivanti

What to do

  1. Check whether you run it. Look for Endpoint Manager (EPM) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Ivanti CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  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 10 Feb 2026.
  4. Get told next time. Email alerts when CISA adds a CVE for Ivanti.

Other exploited CVEs in Endpoint Manager (EPM)

References

Questions

Is CVE-2026-1603 being exploited?

Yes. CISA added CVE-2026-1603 to the Known Exploited Vulnerabilities catalog on 9 Mar 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2026-1603 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2026-1603?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Ivanti's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Endpoint Manager (EPM) and watch it for signs of compromise.

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 March 2026 · Ivanti scorecard · act-now radar.

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