FKIE_CVE-2026-2966

Vulnerability from fkie_nvd - Published: 2026-02-23 03:15 - Updated: 2026-02-23 20:18
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
References
cna@vuldb.comhttps://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.mdExploit, Third Party Advisory
cna@vuldb.comhttps://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md#pocExploit, Third Party Advisory
cna@vuldb.comhttps://vuldb.com/?ctiid.347333Permissions Required, VDB Entry
cna@vuldb.comhttps://vuldb.com/?id.347333Third Party Advisory, VDB Entry
cna@vuldb.comhttps://vuldb.com/?submit.755304Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
cesanta mongoose *
To clipboard 

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  "descriptions": [
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      "value": "A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."
    },
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      "value": "Se ha identificado una debilidad en Cesanta Mongoose hasta la versi\u00f3n 7.20. El elemento afectado es la funci\u00f3n mg_sendnsreq del archivo /src/dns.c del componente Gestor de ID de Transacci\u00f3n DNS. Ejecutar el  argumento random manipulado puede conducir a valores insuficientemente aleatorios. El ataque puede lanzarse de forma remota. El ataque tiene un nivel de complejidad alto y se considera dif\u00edcil de explotar. El exploit se ha puesto a disposici\u00f3n del p\u00fablico y podr\u00eda usarse para ataques. Se contact\u00f3 al proveedor con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."
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  "id": "CVE-2026-2966",
  "lastModified": "2026-02-23T20:18:06.617",
  "metrics": {
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        "baseSeverity": "LOW",
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          "accessVector": "NETWORK",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
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          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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  • 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.



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