---
title: "CVE-2026-104935: ICS - Authentication Bypass"
description: "ICS < 25.1.3.0 contains an authentication bypass by spoofing, letting remote unauthenticated attackers execute arbitrary commands, exploit requires no special privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-104935/
---

# CVE-2026-104935 ICS - Authentication Bypass

ICS < 25.1.3.0 contains an authentication bypass by spoofing, letting remote unauthenticated attackers execute arbitrary commands, exploit requires no special privileges.

CVSS base score 8.6 /10

Critical

CISA KEV

Exploited in the wild

Public exploit

Proof of concept available

Authentication

Not required

EPSS

25.98% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104935)

## Details

Type

Authentication Bypass

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-290](https://cwe.mitre.org/data/definitions/290.html)

## Vendor fix

Update to version 25.1.3.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104935](https://nvd.nist.gov/vuln/detail/CVE-2026-104935)
- [https://hub.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-104935](https://hub.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-CVE-2026-104935)
- [https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field\_cve=CVE-2026-104935](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104935)
- [https://forums.ivanti.com](https://forums.ivanti.com/)
- [https://www.volexity.com/blog/2026/10/13/a-series-of-unauthenticated-events-chained-exploitation-of-ivanti-connect-secure-zero-days/](https://www.volexity.com/blog/2026/10/13/a-series-of-unauthenticated-events-chained-exploitation-of-ivanti-connect-secure-zero-days/)
- [https://x.com/DefusedCyber/status/2110040892572602788](https://x.com/DefusedCyber/status/2110040892572602788)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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