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CVE Record

CVE-2023-54337: Sysax Multi Server 6.95 - 'Password' Denial of Service (PoC)

Sysax Multi Server 6.95 contains a denial of service vulnerability in the administrative password field that allows attackers to crash the application. Attackers can overwrite the password field with 800 bytes of repeated characters to trigger an application crash and disrupt server functionality.

CriticalCVSS 9.1Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Sysax Multi Server 6.95 can reportedly be crashed by submitting an oversized value in the administrative password field. For organizations using this product, the main business risk is service disruption to file transfer or remote-access workflows that depend on it.

Executive priority

Prioritize quickly if Sysax Multi Server 6.95 is internet-facing or supports critical business transfers. If it is internal-only and access-controlled, treat as urgent hygiene rather than an emergency.

Technical view

CVE-2023-54337 affects Sysax Multi Server 6.95. Public advisories describe improper input handling in the password field causing application crash and denial of service. The provided CVSS is 9.1 with network attack vector, low complexity, and no privileges required, though the described impact is primarily availability disruption.

Likely exposure

Exposure is limited to organizations running Sysax Multi Server 6.95, especially where its administrative or service interfaces are reachable from untrusted networks.

Exploitation context

A public proof of concept is referenced by ExploitDB and VulnCheck. The source bundle does not show CISA KEV listing or other cited evidence of active exploitation in the wild.

Researcher notes

Evidence supports a public PoC and DoS condition for version 6.95. The bundle does not identify a vendor patch, affected versions beyond 6.95, or confirmed exploitation. CVSS integrity impact appears stronger than the narrative evidence provided.

Mitigation direction

  • Check Sysax guidance for a fixed version or vendor-recommended mitigation.
  • Upgrade away from Sysax Multi Server 6.95 if a fixed release is available.
  • Restrict access to administrative interfaces to trusted networks or VPN users.
  • Block unnecessary internet exposure for Sysax Multi Server services.
  • Monitor service availability and restart failures until remediation is complete.

Validation and detection

  • Inventory systems for Sysax Multi Server 6.95.
  • Confirm whether Sysax administrative interfaces are internet-accessible.
  • Review logs for abnormal password-field submissions or unexplained service crashes.
  • Validate whether vendor updates or configuration mitigations are applied.
  • Track this CVE in vulnerability management until exposure is removed.
Prepared
Confidence
medium
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-1284: 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.

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-54337 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H3.95.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.1Critical
CVSS 3.1 vector shape for CVE-2023-54337Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
SysaxSysax Multi Server6.95Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-1284 · source CWE mapping

Improper Validation of Specified Quantity in Input

Improper Validation of Specified Quantity in Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.