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CVE-2026-77707— TLS Certificate Validation Disabled for Keycloak Connections in HAVELSAN's Liman Render Engine

Quick assessment

Affected
HAVELSAN Inc. Liman Render Engine
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HAVELSAN Inc. Liman 渲染引擎存在不恰当的证书验证漏洞，允许中间人攻击（AiTM）。 此问题影响 Liman 渲染引擎：版本从 1.0 至 1.2-75 之前的所有版本。

CVSS 5.9 · Medium EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
HAVELSAN Inc. Liman Render Engine 1.0< 1.2-75 affected
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I. Basic Information for CVE-2026-77707

Vulnerability Information
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Vulnerability Title
TLS Certificate Validation Disabled for Keycloak Connections in HAVELSAN's Liman Render Engine
Source: CVE Program / CVE List V5
Vulnerability Description
Improper certificate validation vulnerability in HAVELSAN Inc. Liman Render Engine allows Adversary in the Middle (AiTM). This issue affects Liman Render Engine: from 1.0 before 1.2-75.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HAVELSAN Inc. Liman Render Engine 1.0 ~ 1.2-75 -

II. Public POCs for CVE-2026-77707

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III. Intelligence Information for CVE-2026-77707

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Vendor Advisories for CVE-2026-77707 (1)

Same Patch Batch · HAVELSAN Inc. · 2026-09-24 · 3 CVEs total

CVE-2026-77703 5.9 MEDIUM SSH Host Key Verification Bypass in HAVELSAN's Liman Render Engine
CVE-2026-19532 5.3 MEDIUM Path Traversal in HAVELSAN's Liman MYS

IV. Related Vulnerabilities

Same product: Liman Render Engine
Same vendor: HAVELSAN Inc.
Same weakness: CWE-295

V. Comments for CVE-2026-77707

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