An issue was discovered in GFI Kerio Connect 9.4.1 patch 1 (fixed in 10.0.0).
Priority HIGH 73CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
An issue was discovered in GFI Kerio Connect 9.4.1 patch 1 (fixed in 10.0.0). There is a stack-based Buffer Overflow in the webmail component's 2FASetup function via an authenticated request with a long primaryEMailAddress field to the webmail/api/jsonrpc URI.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01047 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gfi:kerio_connect:9.4.1:patch1:*:*:*:*:*:* | 9.4.1 patch1 | Vulnerable | GFI Software |
- cpe:2.3:a:gfi:kerio_connect:9.4.1:patch1:*:*:*:*:*:* Versions 9.4.1 patch1 Vulnerable ·GFI Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-25267
- 2026-10-03 Alias added: GHSA-hj76-6x6q-33x8
References
More GFI Software Kerio Connect vulnerabilities
- TI-2025-02592 GFI KerioConnect PDF File cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2025-02591 GFI KerioConnect File Upload cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2025-02590 GFI KerioConnect Signature EditHtmlSource cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2017-05092 Kerio Connect 8.0.0 through 9.2.2, and Kerio Connect Client desktop application for… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-25267 · CVE Program
- CVE-2023-25267 · NVD
- FIRST EPSS
- GHSA-hj76-6x6q-33x8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences