Security readout for executives and security teams
Plain-English summary
Sysax Multi-Server 6.10 can have its SSH service crashed by malformed key exchange data. For a business, the main impact is loss of file-transfer or remote-access availability, not confirmed data theft or code execution. Internet-facing SSH exposure increases urgency.
Executive priority
Prioritize remediation for internet-facing or business-critical Sysax Multi-Server 6.10 systems. The risk is service outage, and public exploit material lowers the barrier for disruption. Internal-only systems are lower urgency but still need inventory and vendor-guided remediation.
Technical view
The vulnerability is a remotely reachable SSH daemon denial of service in Sysax Multi-Server 6.10. The CVSS 4.0 vector indicates network access, low complexity, no privileges, no user interaction, and high vulnerable-system availability impact. The bundle maps it to CWE-248.
Likely exposure
Exposure is likely limited to organizations still running Sysax Multi-Server 6.10 with its SSH daemon enabled, especially where the service is reachable from untrusted networks or the internet. The bundle does not identify other affected versions.
Exploitation context
Public technical and exploit references exist, including a Metasploit module. The provided sources do not show CISA KEV listing or evidence of active exploitation. Treat exploit availability as a practical testing and abuse risk, but do not assume observed attacks without local telemetry.
Researcher notes
Evidence supports a malformed SSH key exchange handling crash affecting Sysax Multi-Server 6.10. The bundle does not name a fixed version, patch, or active exploitation. Validate exposure through asset, version, service, and network reachability checks rather than production crash testing.
Mitigation direction
- Inventory Sysax Multi-Server deployments and identify version 6.10 instances.
- Check Sysax guidance for a vendor-supported update or replacement path.
- Restrict SSH access to trusted networks or VPN until remediated.
- Disable the SSH service if it is not operationally required.
- Monitor for SSH service crashes and unexpected restarts.
Validation and detection
- Confirm whether Sysax Multi-Server 6.10 is installed on managed assets.
- Verify whether the Sysax SSH daemon is enabled and externally reachable.
- Review service logs and monitoring for crash or restart patterns.
- Check perimeter rules for direct SSH exposure to untrusted sources.
- Document compensating controls where upgrade status is unknown.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-248: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2013-10065 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mattandreko.com/2013/04/08/sysax-multi-server-6.10-ssh-dos/CVE reference · technical-description, exploit
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/ssh/sysax_sshd_kexchange.rbCVE reference · exploit
- https://www.sysax.com/CVE reference · product
- https://www.vulncheck.com/advisories/sysax-multi-server-sshd-key-exchange-dosCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncaught Exception
Uncaught Exception represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.