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CVE-2026-1603 is a high-severity authentication bypass vulnerability in Ivanti Endpoint Manager (EPM) affecting versions before 2024 SU5, including EPM 2024 SU4 SR1 and earlier. The flaw is described as an authentication bypass using an alternate path or channel and, per the provided technical context, exists within the AuthHelper class due to use of an alternative, weak authentication path. It is remotely exploitable over the network, requires no authentication, no user interaction, and low attack complexity. Successful exploitation allows a remote unauthenticated attacker to bypass normal authentication controls and leak specific stored credential data from the affected EPM instance. The provided CVSS v3.1 vector is AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
71 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Ivanti Endpoint Manager vulnerability referenced as actively exploited and included in CISA's KEV catalog; the content states it enables attackers to bypass authentication or execute remote code and access sensitive enterprise systems.
An actively exploited Ivanti Endpoint Manager vulnerability referenced as being added to CISA's KEV catalog.
A vulnerability in Ivanti Endpoint Manager (EPM) that has been weaponized by threat actors since mid-February, prompting CISA to shorten remediation timelines.
Unknown (mentioned as added to CISA KEV; no additional technical details provided in the content).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.