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CVE Record

CVE-2021-41314: Certain NETGEAR smart switches are affected by a \n injection in the web UI's password field, which - due t...

Certain NETGEAR smart switches are affected by a \n injection in the web UI's password field, which - due to several faulty aspects of the authentication scheme - allows the attacker to create (or overwrite) a file with specific content (e.g., the "2" string). This leads to admin session crafting and therefore gaining full web UI admin privileges by an unauthenticated attacker. This affects GC108P before 1.0.8.2, GC108PP before 1.0.8.2, GS108Tv3 before 7.0.7.2, GS110TPP before 7.0.7.2, GS110TPv3 before 7.0.7.2, GS110TUP before 1.0.5.3, GS308T before 1.0.3.2, GS310TP before 1.0.3.2, GS710TUP before 1.0.5.3, GS716TP before 1.0.4.2, GS716TPP before 1.0.4.2, GS724TPP before 2.0.6.3, GS724TPv2 before 2.0.6.3, GS728TPPv2 before 6.0.8.2, GS728TPv2 before 6.0.8.2, GS750E before 1.0.1.10, GS752TPP before 6.0.8.2, GS752TPv2 before 6.0.8.2, MS510TXM before 1.0.4.2, and MS510TXUP before 1.0.4.2.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2021-41314 lets an unauthenticated attacker gain full administrator access to the web interface of certain NETGEAR smart switches if they run vulnerable firmware. For affected switches, this is a serious control-plane risk because the device management UI can be taken over without valid credentials.

Executive priority

Prioritize remediation for any affected switch whose management interface is reachable beyond a tightly controlled admin network. Unauthenticated admin takeover of network infrastructure can support broader disruption or follow-on compromise.

Technical view

The issue is a newline injection in the web UI password field. According to the CVE description, flaws in the authentication scheme allow file creation or overwrite with specific content, enabling admin session crafting and full web UI admin privileges without authentication.

Likely exposure

Exposure is likely where affected NETGEAR smart switch models are deployed with vulnerable firmware and the web management interface is reachable from an attacker-controlled network path. The source lists many GC, GS, and MS smart switch models with fixed firmware thresholds.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. It does include a public researcher write-up and a NETGEAR security advisory, so defenders should treat technical details as publicly known.

Researcher notes

Key affected versions include GC108P/GC108PP before 1.0.8.2, GS108Tv3/GS110TPP/GS110TPv3 before 7.0.7.2, and multiple GS/MS models before listed fixed releases. The bundle lacks CVSS details and confirmed exploitation evidence.

Mitigation direction

  • Upgrade affected switches to the NETGEAR fixed firmware version or later.
  • Restrict switch web UI access to trusted management networks only.
  • Disable unnecessary remote management exposure where operationally possible.
  • Review NETGEAR advisory guidance for model-specific remediation.

Validation and detection

  • Inventory NETGEAR smart switches by model and firmware version.
  • Compare firmware against the fixed versions listed for CVE-2021-41314.
  • Verify web UI management is not reachable from untrusted networks.
  • Check administrative session and configuration history for unexpected activity.
Prepared
Confidence
medium
Sources
4

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

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ATT&CK lookup starting points

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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.

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cve · low confidence lookup

CVE-2021-41314 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
3Source 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
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.