Is CVE-2024-52875 actively exploited?

Yes. KEV Intelligence tracks CVE-2024-52875 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2024-52875. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2024-52875 affects GFI Kerio Control. Reported affected version: 9.2.5 to <= 9.4.5.

No. CVE-2024-52875 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2024-52875

Q: How should organizations remediate it?

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

Q: Is it in CISA KEV?

No. CVE-2024-52875 is not currently listed in CISA KEV.

Kerio Control Cross-Site Scripting

GFI / Kerio Control · 9.2.5 to <= 9.4.5

View live feed Monitor via API Watch CVE

Severity: CVSS 8.8 · High
Confidence: High
Exploit status: Exploited in the wild
EPSS: 29.6%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-52875 is an unauthenticated vulnerability affecting GFI Kerio Control. An issue was discovered in GFI Kerio Control 9.2.5 through 9.4.5. The dest GET parameter passed to the /nonauth/addCertException.cs and...

Is it exploited?

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

Who is affected?

GFI / Kerio Control 9.2.5 to <= 9.4.5.

What should we do?

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

Overview

An issue was discovered in GFI Kerio Control 9.2.5 through 9.4.5

An issue was discovered in GFI Kerio Control 9.2.5 through 9.4.5. The dest GET parameter passed to the /nonauth/addCertException.cs and /nonauth/guestConfirm.cs and /nonauth/expiration.cs pages is not properly sanitized before being used to generate a Location HTTP header in a 302 HTTP response.

This can be exploited to perform Open Redirect or HTTP Response Splitting attacks, which in turn lead to Reflected Cross-Site Scripting (XSS). Remote command execution can be achieved by leveraging the upgrade feature in the admin interface.

Vendor Product Affected Status

GFI Kerio Control Through 9.4.5 Affected

Published: 31 Jan 2025
Exploitation Reported: 12 Sep 2025
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: Required

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2024-52875
karmainsecurity.com/hacking-kerio-control-via-cve-2024-52875 karmainsecurity.com · CVE Record https://karmainsecurity.com/hacking-kerio-control-via-cve-2024-52875

Exploitation evidence

Why KEV Intelligence 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 12 Sep 2025

Independent exploitation attestation added to the KEV Intelligence 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 KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2025-09-12 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 KEV Intelligence 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/2024/CVE-2024-52875.yaml	25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.8 High

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

EPSS

29.6%

Weaknesses

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') CWE-113

Potential Proof of Concepts

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

Kerio Control v9.2.5 - CRLF Injection

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

12 Jun 2026
Public PoC available

Public proof-of-concept code published
12 Sep 2025
Added to KEV Intelligence KEV Feed

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

Scanner coverage available
31 Jan 2025
CVE published

Vulnerability disclosed publicly
17 Nov 2024
CVE ID reserved

Identifier reserved by the CNA

Pro API

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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-2024-52875

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2024-52875",
  "confidence": "High",
  "cvss_score": 8.8,
  "cvss_estimated": false,
  "epss_score": 0.29558,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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