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CVE Record

CVE-2020-6644: An insufficient session expiration vulnerability in FortiDeceptor 3.0.0 and below allows an attacker to reu...

An insufficient session expiration vulnerability in FortiDeceptor 3.0.0 and below allows an attacker to reuse the unexpired admin user session IDs to gain admin privileges, should the attacker be able to obtain that session ID via other, hypothetical attacks.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

FortiDeceptor 3.0.0 and earlier could leave administrator sessions valid long enough for reuse. If an attacker separately obtained an admin session ID, they could use it to gain administrator privileges. The provided sources identify FortiDeceptor only and state the issue is fixed in 3.0.1.

Executive priority

Treat this as a targeted administrative-control risk, not a broad internet worm risk based on the provided evidence. Prioritize remediation for any deployed FortiDeceptor instance, especially if management access is exposed beyond a tightly controlled admin network.

Technical view

The issue is insufficient session expiration in Fortinet FortiDeceptor 3.0.0 and below. The described attack depends on acquiring an unexpired administrator session ID through other hypothetical means, then reusing it for admin access. No CVSS vector, CWE, or public exploitation evidence is provided in the source bundle.

Likely exposure

Exposure appears limited to organizations running Fortinet FortiDeceptor 3.0.0 or earlier. Risk is higher where the management interface is broadly reachable or where session IDs could be exposed through adjacent weaknesses, logs, browsers, proxies, or compromised workstations.

Exploitation context

The source bundle does not show known active exploitation, and CISA KEV status is false. The CVE describes a prerequisite: the attacker must already obtain a valid admin session ID through another hypothetical attack.

Researcher notes

Key missing evidence includes CVSS details, CWE mapping, exploit availability, and Fortinet advisory specifics beyond the referenced fix. Assessment should focus on version confirmation, management-plane exposure, and whether session identifiers could be exposed through related systems.

Mitigation direction

  • Upgrade FortiDeceptor 3.0.0 and earlier to 3.0.1 or later.
  • Review Fortinet advisory FG-IR-20-006 for vendor-specific guidance.
  • Restrict FortiDeceptor administration access to trusted networks and administrators.
  • Invalidate existing admin sessions after remediation where supported.
  • Review admin account hygiene and remove unnecessary privileged access.

Validation and detection

  • Inventory FortiDeceptor deployments and record installed versions.
  • Confirm affected systems are upgraded to 3.0.1 or later.
  • Check whether admin interfaces are reachable from untrusted networks.
  • Review logs for unusual administrative session reuse or source changes.
  • Verify session management settings against current Fortinet guidance.
Prepared
Confidence
medium
Sources
3

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

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CVE-2020-6644 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
FortinetFortinet FortiDeceptor3.0.0 and below, Fixed in 3.0.1Listed
Weakness

CWE details

No CWE listed

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