CVE-2024-52875Kerio Control Vulnerability
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.
Published Jan 31, 2025 · Updated Sep 16, 2025
Key Facts
Patch immediately- CVE-2024-52875 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Kerio Control (Gfi).
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 8, 2025. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 29% probability of exploitation in the next 30 days.
- Fixed versions are available, including Kerio Control <=9.4.5, Kerio Control 9.4.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
29%
Higher than 98.1% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
46/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 8, 2025
-23 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
12
Reports of active use
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Jan 8, 2025 | n/a | Not reported |
| Industry KEV feed | Jan 8, 2025 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Kerio ControlGfi | >= 9.2.5 | 9.4.5 |
Patched Releases
Kerio Control
<=9.4.5
Timeline
Added to CIRCL KEV
Jan 8, 2025
Added to Industry KEV feed
Jan 8, 2025
Publicly disclosed
Jan 31, 2025
Last updated
Sep 16, 2025
Weakness Type
- CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
An issue was discovered in GFI Kerio Control 9.2.5 through 9.4.5.
Affected: Kerio Control (Gfi) versions >= 9.2.5. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 8, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including Kerio Control <=9.4.5, Kerio Control 9.4.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2024-52875 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo