Sysax Multi-Server <= 6.10 SSHD Key Exchange DoS
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-248.
Summary
A denial-of-service vulnerability exists in Sysax Multi-Server version 6.10 via its SSH daemon. A specially crafted SSH key exchange packet can trigger a crash in the service, resulting in loss of availability. The flaw is triggered during the handling of malformed key exchange data, including a non-standard byte (\x28) in place of the expected SSH protocol delimiter.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Sysax Software | Multi-Server | 6.10 | — | No fix listed | CNA |
- Multi-Server VendorSysax Software Affected 6.10 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2013-10065
- 2026-10-03 Alias added: GHSA-r9wj-gm7p-2529
References
More Sysax Multi Server vulnerabilities
- TI-2012-05483 Sysax Multi Server < 5.55 SSH Username Buffer Overflow CVSS 4.0CRITICAL 9.3
- TI-2024-35807 Sysax Multi Server 6.99 is vulnerable to a denial of service (DoS) condition when… CVSS 3.1HIGH 7.5
- TI-2012-05248 Stack-based buffer overflow in Sysax Multi Server before 5.52, when HTTP is enabled… CVSS 2.0HIGH 7.1
- TI-2024-35808 Sysax Multi Server 6.99 is vulnerable to Cross Site Scripting (XSS) via the /scgi?sid parameter. CVSS 3.1MEDIUM 6.1
- TI-2023-30611 Sysax Multi Server 6.95 - 'Password' Denial of Service (PoC) CVSS 4.0MEDIUM 5.1
- TI-2009-04546 Multiple directory traversal vulnerabilities in Sysax Multi Server 4.5 allow remote… CVSS 2.0HIGH 9.0
Sources
- CVE-2013-10065 · CVE Program
- CVE-2013-10065 · NVD
- FIRST EPSS
- GHSA-r9wj-gm7p-2529 · GitHub Advisory Database · CC BY 4.0
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