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CVE Record

CVE-2021-46009: In Totolink A3100R V5.9c.4577, multiple pages can be read by curl or Burp Suite without authentication.

In Totolink A3100R V5.9c.4577, multiple pages can be read by curl or Burp Suite without authentication. Additionally, admin configurations can be set without cookies.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This CVE describes a Totolink A3100R router firmware issue where management pages may be accessible without login, and administrator settings may be changeable without valid cookies. For an exposed router, this could let an unauthenticated person view sensitive settings or alter device configuration.

Executive priority

Prioritize quickly for any internet-exposed or business-critical router. The issue can affect confidentiality and integrity of network edge configuration, but source evidence is limited and no official patch details are provided.

Technical view

CVE-2021-46009 affects Totolink A3100R V5.9c.4577 according to the CVE description. The reported behavior is missing authentication on multiple readable pages and insufficient session validation for administrative configuration changes. No CVSS score, CWE mapping, vendor advisory, or fixed version is included in the provided sources.

Likely exposure

Exposure is most likely where Totolink A3100R devices run firmware V5.9c.4577 and their web management interface is reachable from untrusted networks. The source bundle does not prove broader model, version, or vendor exposure.

Exploitation context

The bundle includes a public reference, but does not cite active exploitation. CISA KEV status is false. Practical risk depends on whether an attacker can reach the router management interface and whether the affected firmware is deployed.

Researcher notes

The CVE metadata lacks CVSS, CWE, and normalized affected CPEs. Treat the product/version from the description as the primary affected statement. Do not claim exploitation in the wild from this bundle; KEV is false and no cited source says otherwise.

Mitigation direction

  • Check Totolink guidance for a fixed firmware version or replacement advice.
  • Disable internet-facing remote administration on affected routers.
  • Restrict management access to trusted administrative networks only.
  • Review router configuration for unauthorized changes.
  • Replace unsupported devices if no vendor fix is available.

Validation and detection

  • Inventory Totolink A3100R devices and record firmware versions.
  • Confirm whether firmware V5.9c.4577 is present.
  • Verify the management interface is not internet-accessible.
  • Review administrative settings and logs for unexpected changes.
  • Confirm protected pages require authentication after remediation.
Prepared
Confidence
medium
Sources
3

Public sources used

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-2021-46009 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
3Timeline events
1ADP providers
2Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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