AiTM interception via disabled SSH host-key checks
Published Sep 24, 2026 · Updated Sep 24, 2026
Key exchange without entity authentication in HAVELSAN Liman Render Engine 1.0 through 1.2-74 allows attackers to intercept SSH traffic. The InitShell and VerifySSH paths assign ssh.InsecureIgnoreHostKey() as the HostKeyCallback, accepting any presented server key instead of authenticating the SSH endpoint. Exploitation requires an attacker positioned to redirect or intercept an outbound SSH connection, enabling interception or manipulation of credentials and session data.
Summary
What happened
Key exchange without entity authentication in HAVELSAN Liman Render Engine 1.0 through 1.2-74 allows attackers to intercept SSH traffic. The InitShell and VerifySSH paths assign ssh.InsecureIgnoreHostKey() as the HostKeyCallback, accepting any presented server key instead of authenticating the SSH endpoint. Exploitation requires an attacker positioned to redirect or intercept an outbound SSH connection, enabling interception or manipulation of credentials and session data.
The record
- CVE
- CVE-2026-77703
- Published
- Sep 24, 2026
- Updated
- Sep 24, 2026
- Vendor
- HAVELSAN
- Product
- Liman Render Engine
- Classifications
- CWE-322, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 24, 2026CVE publishedPublication date reported by the CVE source.
- Sep 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0 <1.2-75
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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