Is CVE-2020-29597 actively exploited?

Yes. KEVIntel tracks CVE-2020-29597 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEVIntel observed?

KEVIntel has not yet recorded sensor-observed exploitation attempts for CVE-2020-29597. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

Version-level data is not available; KEVIntel tracks IncomCMS IncomCMS 2.0.

No. CVE-2020-29597 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2020-29597

IncomCMS 2.0

IncomCMS / IncomCMS 2.0

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Severity: CVSS 9.8 · Critical
Confidence: High
Exploit status: Exploited in the wild
EPSS: 71.0%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2020-29597 is an unauthenticated vulnerability affecting IncomCMS IncomCMS 2.0. IncomCMS 2.0 has a modules/uploader/showcase/script.php insecure file upload vulnerability. This vulnerability allows unauthenticated...

Is it exploited?

Yes. KEVIntel tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

IncomCMS / IncomCMS 2.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

IncomCMS 2.0 has a modules/uploader/showcase/script.php insecure file upload vulnerability

IncomCMS 2.0 has a modules/uploader/showcase/script.php insecure file upload vulnerability. This vulnerability allows unauthenticated attackers to upload files into the server.

Published: 07 Dec 2020
Exploitation Reported: 27 Jun 2025
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

m4dm0e.github.io/2020/12/07/incom-insecure-up.html m4dm0e.github.io · CVE Record https://m4dm0e.github.io/2020/12/07/incom-insecure-up.html
GitHub — M4DM0e/m4dm0e.github.io github.com · CVE Record https://github.com/M4DM0e/m4dm0e.github.io/blob/gh-pages/_posts/2020-...
packetstormsecurity.com/files/160784/Incom-CMS-2.0-File-Upload.html packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/160784/Incom-CMS-2.0-File-Upload...

Exploitation evidence

Why KEVIntel 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

The Shadowserver

Recorded 27 Jun 2025

Independent exploitation attestation added to the KEVIntel record.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

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

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Source	Added
The Shadowserver First	2025-06-27 00:00 UTC

Detection

Operational artifacts and observed signals

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

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Nuclei template detected 25 Apr 2025.

View Nuclei template

Virtual patch status

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

Learn about virtual patches →

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/2020/CVE-2020-29597.yaml	25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

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

EPSS

71.0%

Weaknesses

Unrestricted Upload of File with Dangerous Type CWE-434

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v2.0 7.5 High

AV:N/AC:L/Au:N/C:P/I:P/A:P

Potential Proof of Concepts

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

IncomCMS 2.0 - Arbitrary File Upload

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

12 Jun 2026
Public PoC available

Public proof-of-concept code published
27 Jun 2025
Added to KEVIntel KEV Feed

High-confidence, third-party attested exploitation
25 Apr 2025
Nuclei template available

Scanner coverage available
07 Dec 2020
CVE published

Vulnerability disclosed publicly
07 Dec 2020
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-2020-29597

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2020-29597",
  "confidence": "High",
  "cvss_score": 9.8,
  "epss_score": 0.71006,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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