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CVE-2026-77703— SSH Host Key Verification Bypass 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公司Liman渲染引擎中存在实体认证缺失的密钥交换漏洞，可能导致中间人攻击（AiTM）。 该问题影响版本范围：Liman渲染引擎1.0至1.2-75（不含1.2-75）。 --- 解析与关键术语说明： 1. 核心漏洞：密钥交换过程缺乏实体认证（如身份验证），导致攻击者可伪装成合法用户进行中间人攻击。 2. 攻击场景：Adversary in the Middle（AiTM）指攻击者拦截并篡改通信数据，窃听或操纵信息传输。 3. 影响版本：覆盖1.0到1.2-75的早期版本，需更新至后续版本以修复。

CVSS 5.9 · Medium EPSS 0.24% · P13

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-2026-77703

Vulnerability Information
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Vulnerability Title
SSH Host Key Verification Bypass in HAVELSAN's Liman Render Engine
Source: CVE Program / CVE List V5
Vulnerability Description
Key exchange without entity authentication 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
未进行实体认证的密钥交换
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-2026-77703

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III. Intelligence Information for CVE-2026-77703

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Vendor Advisories for CVE-2026-77703 (1)

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

CVE-2026-77707 5.9 MEDIUM TLS Certificate Validation Disabled for Keycloak Connections in HAVELSAN's Liman Render En
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-322

V. Comments for CVE-2026-77703

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