CVE-2026-1603

Exp

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

Published: 2026-02-10 Last update: 2026-03-10 Assigner: 3c1d8aa1-5a33-4ea4-8992-aadd6440af75 Source: 3c1d8aa1-5a33-4ea4-8992-aadd6440af75
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-1603 is rated Critical Active Threat (96.8/100): CVSS High severity, with high exploitation likelihood (EPSS 58.92%, 98th percentile). CISA KEV confirms active exploitation (added 2026-03-09) affecting Ivanti / Endpoint Manager (EPM). a weakness (CWE-288) Unauthenticated remote administrative access may be possible. EPSS rose +3.05% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2026-1603

Name: Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability · CISA KEV detail

Exploit added: 2026-03-09

Action due: 2026-03-23

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit prediction scoring system (EPSS) score for CVE-2026-1603

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-05 55.88% 58.92% +3.05%
2 2026-05-23 58.92% 55.88% -3.05%
3 2026-05-11 — 58.92% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-1603

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 4.0 3c1d8aa1-5a33-4ea4-8992-aadd6440af75
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2026-1603

Affected software / configurations for CVE-2026-1603

Vendor Product Version Raw CPE
ivanti endpoint_manager < 2024 cpe:2.3:a:ivanti:endpoint_manager:*:*:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:-:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su1:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su2:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su3:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su3_security_release_1:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su4:*:*:*:*:*:*
ivanti endpoint_manager 2024 cpe:2.3:a:ivanti:endpoint_manager:2024:su4_security_release_1:*:*:*:*:*:*

References for CVE-2026-1603

cvelogic Threat Intelligence