How severe is CVE-2026-1603?

CVE-2026-1603 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-1603 being actively exploited?

Yes. CVE-2026-1603 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-03-09, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2026-1603?

CVE-2026-1603 primarily affects Ivanti Endpoint Manager. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-1603?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2026-1603 have an EU (EUVD) identifier?

Yes. CVE-2026-1603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6842. It is also flagged as exploited in the EUVD (since 2026-03-09).

When was CVE-2026-1603 published?

CVE-2026-1603 was published on 2026-02-10 and last updated on 2026-06-17.

CVE-2026-1603

CVE-2026-1603 is a high-severity vulnerability in Ivanti Endpoint Manager with a CVSS 3.x base score of 8.6. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-03-09). The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 81% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-03-09)
EU (EUVD) id: EUVD-2026-6842
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2026-03-09)
Weakness: CWE-306
Affected product: Ivanti Endpoint Manager
Published: 2026-02-10
Last modified: 2026-06-17

Description

An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

Frequently asked questions

What is CVE-2026-1603?: An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.
How severe is CVE-2026-1603?: CVE-2026-1603 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-1603 being actively exploited?: Yes. CVE-2026-1603 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-03-09, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2026-1603?: CVE-2026-1603 primarily affects Ivanti Endpoint Manager. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-1603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2026-1603 have an EU (EUVD) identifier?: Yes. CVE-2026-1603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6842. It is also flagged as exploited in the EUVD (since 2026-03-09).
When was CVE-2026-1603 published?: CVE-2026-1603 was published on 2026-02-10 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:ivanti:endpoint_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su1:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su2:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su3:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su3_security_release_1:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su4:*:*:*:*:*:*
cpe:2.3:a:ivanti:endpoint_manager:2024:su4_security_release_1:*:*:*:*:*:*

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