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Vulnerability record · public intelligence
CVE-2026-96257
CRITICAL

Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow

Published Sep 23, 2026 · Updated Nov 3, 2026

Severity · CVSSCRITICAL · Not scored
Known exploitationNot listed
EPSS / likelihood1.04%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

A flaw has been found in Fast FAC1203R Gigabit Edition 2.0.4. Affected by this issue is the function copy_msg_element of the component Device Discovery Service. Executing a manipulation can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
MEDIUM
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. VDB-408707 | Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow ↗
  2. VDB-408707 | CTI Indicators (IOB, IOC, IOA) ↗
  3. CVE-2026-96257 | CVE Analysis and Report ↗
  4. Submit #901889 | Fast FAC1203R Gigabit Edition 20200116_2.0.4 Stack-based Buffer Overflow ↗
  5. Source repository ↗

Record history

Published Sep 23, 2026 · Last refreshed Nov 3, 2026

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