Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2024-20767

ColdFusion

Adobe / ColdFusion · 2023.0 to <= 2023.0_update_12

Watch CVE-2024-20767 Browse KEV feed
Severity
CVSS 7.4 · High
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
98.5%
First observed
12 Jun 2026
Last observed
10 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-20767 is an unauthenticated vulnerability affecting Adobe ColdFusion. ColdFusion versions 2023.6, 2021.12 and earlier are affected by an Improper Access Control vulnerability that could result in arbitrary...

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?

Adobe / ColdFusion 2023.0 to <= 2023.0_update_12.

What should we do?

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

Overview

ColdFusion

ColdFusion versions 2023.6, 2021.12 and earlier are affected by an Improper Access Control vulnerability that could result in arbitrary file system read. An attacker could leverage this vulnerability to access or modify restricted files.

Exploitation of this issue does not require user interaction. Exploitation of this issue requires the admin panel be exposed to the internet.

adobe Affected
coldfusion
Through 2023.0_update_12 Through 2021.0_update12
Adobe Affected
ColdFusion
Through 2021.12
View vendor advisory (opens in new tab)
Published
18 Mar 2024
Exploitation Reported
16 Dec 2024
Attack vector
Remote
Complexity
High
Privileges
None
User interaction
None

Tags

nessus_scanner cisa nuclei_scanner

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 16 Dec 2024

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 12 Jun 2026

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

Proof of concept available

GitHub

Recorded 26 Mar 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.

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Source Added
CISA First 2024-12-16 00:00 UTC
The Shadowserver 2026-06-05 00:00 UTC
Previdian Sensors 2026-06-24 16:09 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.

270

Attempts observed

85

Unique attacker IPs

12

Attacker countries

AU · BE · BG · CH · FR · JP · NL · RU · SG · TW · US · YE

47

Sensors observed

CVE-2024-20767 exploitation attempts over the last 91 days

Daily events observed by Previdian sensors

Updated 10 Oct 2026

2
0
0
2
4
0
2
4
0
2
0
1
1
2
2
1
0
0
0
1
1
0
0
4
1
4
2
3
4
2
22
4
0
1
6
0
0
4
4
1
2
0
22
40
14
6
0
0
0
0
1
0
2
0
0
1
1
2
1
1
1
0
0
0
0
3
2
1
3
0
1
0
0
1
0
0
2
1
0
0
2
7
9
0
8
3
4
17
10
12
3
12 Jul 31 Jul 19 Aug 7 Sep 10 Oct

First observed 12 Jun 2026 · Last observed 10 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
9
0

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

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

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.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-20767.yaml 25 Apr 2025

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.4 High

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

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

EPSS

98.5%

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

Weaknesses

Improper Access Control CWE-284

Potential Proof of Concepts

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

Adobe ColdFusion - Arbitrary File Read

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 14:21 UTC

    Virtual patch available

    Compensating WAF rule available to block exploitation

  2. 14:20 UTC

    Public PoC available

    Public proof-of-concept code published

  3. 00:33 UTC

    Indicators of compromise added (97)

    Indicators of compromise recorded

  4. 00:33 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  5. 00:00 UTC

    KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  6. 00:00 UTC

    Nuclei template available

    Scanner coverage available

  7. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  8. 11:43 UTC

    CVE published

    Vulnerability disclosed publicly

  9. 16:52 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-2024-20767

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2024-20767",
  "confidence": "Confirmed",
  "cvss_score": 7.4,
  "cvss_estimated": false,
  "epss_score": 0.98514,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 270, "sensors": 47 }
}