An issue was discovered in GFI Kerio Control 9.2.5 through 9.4.5.

published 2025-01-31 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-46263

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 29.4%; EPSS 29.4% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known, plus a Nuclei check

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 21 mo ago (2025-01-31)

Exploit prediction

29.39% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Kerio Control v9.2.5 - CRLF Injection nuclei detection template
karmainsecurity.com https://karmainsecurity.com/hacking-kerio-control-via-cve-2024-52875 referenced PoC, tagged "exploit" by a source, unverified
seclists.org http://seclists.org/fulldisclosure/2024/Dec/15 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

GFI Kerio Control

Classification

Weakness

CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers

References

karmainsecurity.com /hacking-kerio-control-via-cve-2024-52875
exploit, third-party-advisory
seclists.org /fulldisclosure/2024/Dec/15
exploit, mailing-list, third-party-advisory

Sources

CVE List CVE-2024-52875
NVD CVE-2024-52875

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary