FKIE_CVE-2026-3622

Vulnerability from fkie_nvd - Published: 2026-03-26 21:17 - Updated: 2026-03-31 19:09
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition.  This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).
References
f23511db-6c3e-4e32-a477-6aa17d310630https://www.tp-link.com/en/support/download/tl-wr841n/v14/#FirmwareProduct
f23511db-6c3e-4e32-a477-6aa17d310630https://www.tp-link.com/us/support/download/tl-wr841n/v14/#FirmwareProduct
f23511db-6c3e-4e32-a477-6aa17d310630https://www.tp-link.com/us/support/faq/5033/Vendor Advisory
Impacted products
Vendor Product Version
tp-link tl-wr841n_firmware *
tp-link tl-wr841n 14
To clipboard 

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      "value": "The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service.  \n\nSuccessful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition.\u00a0\nThis vulnerability affects TL-WR841N v14\u00a0\u003c EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and\u00a0\u003c US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304)."
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      "value": "La vulnerabilidad existe en el componente UPnP del TL-WR841N v14, donde una validaci\u00f3n de entrada incorrecta conduce a una lectura fuera de l\u00edmites, lo que podr\u00eda causar una ca\u00edda del servicio UPnP.\n\nUna explotaci\u00f3n exitosa puede provocar la ca\u00edda del servicio UPnP, lo que resulta en una condici\u00f3n de Denegaci\u00f3n de Servicio.\nEsta vulnerabilidad afecta a TL-WR841N v14 \u0026lt; EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) y \u0026lt; US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304)."
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  "lastModified": "2026-03-31T19:09:04.387",
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          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.