{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-20T04:26:27.600","vulnerabilities":[{"cve":{"id":"CVE-2026-31883","sourceIdentifier":"security-advisories@github.com","published":"2026-03-13T19:54:37.190","lastModified":"2026-03-17T14:26:13.760","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an astronomical number of iterations. This vulnerability is fixed in 3.24.0."},{"lang":"es","value":"FreeRDP es una implementación gratuita del Protocolo de Escritorio Remoto. Anterior a la 3.24.0, un subdesbordamiento de size_t en los decodificadores de audio IMA-ADPCM y MS-ADPCM conduce a una escritura de desbordamiento de búfer de pila a través del canal de audio RDPSND. En libfreerdp/codec/dsp.c, los decodificadores IMA-ADPCM y MS-ADPCM restan tamaños de encabezado de bloque de una variable size_t sin comprobar si hay subdesbordamiento. Cuando nBlockAlign (recibido del servidor) se establece de tal manera que size % block_size == 0 activa el análisis del encabezado en un punto donde size es menor que el encabezado (4 u 8 bytes), la resta envuelve size a ~SIZE_MAX. El bucle while (size > 0) entonces continúa por un número astronómico de iteraciones. Esta vulnerabilidad se corrige en la 3.24.0."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":2.5},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-122"},{"lang":"en","value":"CWE-191"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*","versionEndExcluding":"3.24.0","matchCriteriaId":"97FCA262-35C3-4B6B-A321-15CE780FCA20"}]}]}],"references":[{"url":"https://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-85x9-4xxp-xhm5","source":"security-advisories@github.com","tags":["Exploit","Patch","Vendor Advisory"]},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-85x9-4xxp-xhm5","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Patch","Vendor Advisory"]}]}}]}