Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2023-46805

ICS Authentication Bypass

Ivanti / ICS · 9.1R18 to <= 9.1R18

Watch CVE-2023-46805 Browse KEV feed
Severity
CVSS 8.2 · High
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
100.0%
First observed
26 Sep 2026
Last observed
11 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-46805 is an unauthenticated vulnerability affecting Ivanti ICS, IPS. An authentication bypass vulnerability in the web component of Ivanti ICS 9.x, 22.x and Ivanti Policy Secure allows a remote attacker to...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Ivanti / ICS 9.1r18 to <= 9.1r18.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

ICS Authentication Bypass

An authentication bypass vulnerability in the web component of Ivanti ICS 9.x, 22.x and Ivanti Policy Secure allows a remote attacker to access restricted resources by bypassing control checks.

Ivanti Affected
ICS
Through 9.1R18 Through 22.6R2
Ivanti Affected
IPS
Through 9.1R18 Through 22.6R1
Published
12 Jan 2024
Exploitation Reported
10 Jan 2024
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

metasploit nuclei_scanner cisa edge malware

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 10 Jan 2024

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 26 Sep 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Used in malware

CISA

Recorded 02 Jun 2026

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 14 Jan 2024

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CISA First 2024-01-10 00:00 UTC
The Shadowserver 2026-05-29 00:00 UTC
Tenable Blog 2026-06-02 14:20 UTC
CVE 2026-08-04 04:41 UTC
Previdian Sensors 2026-09-26 12:05 UTC
The Hacker News 2026-10-05 15:34 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

5

Attempts observed

5

Unique attacker IPs

4

Attacker countries

FR · HK · NL · SG

3

Sensors observed

CVE-2023-46805 exploitation attempts over the last 18 days

Daily events observed by Previdian sensors

Updated 12 Oct 2026

0
1
0
0
0
0
0
0
0
0
0
0
0
2
0
1
1
0
25 Sep 29 Sep 3 Oct 7 Oct 12 Oct

First observed 26 Sep 2026 · Last observed 11 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
3
4
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/ivanti_connect_secure_rce_cve_2023_46805.rb 28 Apr 2025
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-46805.yaml 25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.2 High

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

100.0%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Authentication CWE-287

Recent mention · The Hacker News

Realtek Jungle SDK Exploit Attempts Deliver Cling Botnet With STUN-Based C2

Ravie LakshmananOct 05, 2026Vulnerability / Malware Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling. "Cling is notable not because...

Read full advisory

All CVSS Scores

CVSS v3.1 8.2 High

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

CVSS v3.0 8.2 High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

All Mentions

Recent mention · The Hacker News

Realtek Jungle SDK Exploit Attempts Deliver Cling Botnet With STUN-Based C2

The Hacker News · 05 Oct 2026

Ravie LakshmananOct 05, 2026Vulnerability / Malware Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling. "Cling is notable not because it introduces a new propagation technique, but because it repurposes ordinary STUN behavior into a practical command-and-control channel," Nozomi Networks said in a report published last week. "The result is a botnet whose traffic can resemble legitimate NAT-traversal activity while still supporting propagation,...

Recent mention · Tenable Blog

Inside the customer environment: Where threat actors, vulnerabilities, and exposed assets intersect

Tenable Blog · 27 May 2026

Tenable Research has developed a graph-based model linking 600+ threat groups to real-world customer exposures. It reveals which vulnerabilities sit at the intersection of severity, active exploitation, and organizational risk.Key takeawaysThe "patch everything" strategy is dead: Vulnerability prioritization based on exploitation risk offers a path forward. A directed graph model linking 600+ threat actors to vulnerabilities in 7,800 customer environments reveals that 68% of organizations carry at least one CVE previously exploited by a named adversary, and 321 tracked threat groups can...

Recent mention · Google Threat Intelligence

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75...

Google Threat Intelligence · 29 Apr 2025

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75 zero-day vulnerabilities exploited in the wild in 2024, a decrease from the number we identified in 2023 (98 vulnerabilities), but still an increase from 2022 (63 vulnerabilities). We divided the reviewed vulnerabilities into two main categories: end-user platforms and products (e.g., mobile devices, operating systems, and browsers) and enterprise-focused technologies, such as security software and appliances.  Vendors continue to drive...

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Ivanti ICS - Authentication Bypass

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 15:34 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  2. 12:00 UTC

    Indicators of compromise added (5)

    Indicators of compromise recorded

  3. 12:00 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  4. 04:41 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  5. 14:20 UTC

    Public PoC available

    Public proof-of-concept code published

  6. 14:20 UTC

    KEV confirmed by Tenable Blog

    Exploitation attested by an external source

  7. 14:08 UTC

    First public exploitation report

    Exploit observed in malware

  8. 00:00 UTC

    KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  9. 15:02 UTC

    Metasploit module available

    Exploit module available

  10. 00:00 UTC

    Nuclei template available

    Scanner coverage available

  11. 17:02 UTC

    CVE published

    Vulnerability disclosed publicly

  12. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  13. 01:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-46805

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2023-46805",
  "confidence": "Confirmed",
  "cvss_score": 8.2,
  "cvss_estimated": false,
  "epss_score": 0.99986,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 5, "sensors": 3 }
}