High severity · published Oct 2, 2026
CVE-2026-80443
Insecure TLS Certificate Validation in API Tool Runner in HAVELSAN's Sef - AI Chatbot Platform
7.4
CVSS
0.2%
EPSS
No
On KEV
Description
Improper certificate validation vulnerability in HAVELSAN Inc. Sef - AI Chatbot Platform allows Adversary in the Middle (AiTM).
This issue affects Sef - AI Chatbot Platform: before 2.1. NOTE: The vendor was contacted and it was learned that the product is not supported.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Sef - AI Chatbot Platform · HAVELSAN Inc.
before 2.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80443
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80443
government-resource
https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1241
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