Restricted SSH access via shared private key
Published Mar 17, 2025 · Updated Mar 17, 2025
Hard-coded SSH credentials in Fortinet FortiSIEM 5.2.6 allow remote attackers to access the supervisor as tunneluser. The supervisor accepts a private key shared across installations and embedded in firmware, authenticating its holder to the restricted tunneluser account. No prior account is required, but the attacker must obtain the shared key; the resulting shell is restricted and the vendor reports availability impact only.
Summary
What happened
Hard-coded SSH credentials in Fortinet FortiSIEM 5.2.6 allow remote attackers to access the supervisor as tunneluser. The supervisor accepts a private key shared across installations and embedded in firmware, authenticating its holder to the restricted tunneluser account. No prior account is required, but the attacker must obtain the shared key; the resulting shell is restricted and the vendor reports availability impact only.
The record
- CVE
- CVE-2019-17659
- Published
- Mar 17, 2025
- Updated
- Mar 17, 2025
- Vendor
- Fortinet
- Product
- FortiSIEM
- Classifications
- CWE-798, T1552.001, T1078
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 17, 2025CVE publishedPublication date reported by the CVE source.
- Mar 17, 2025Record 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=5.2.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Paramiko tunneluser SSH login proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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