CVE-2026-31885

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{"affected": [{"affectedData": [{"product": "FreeRDP", "vendor": "FreeRDP", "versions": [{"status": "affected", "version": "< 3.24.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*", "matchCriteriaId": "97FCA262-35C3-4B6B-A321-15CE780FCA20", "versionEndExcluding": "3.24.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input data. This vulnerability is fixed in 3.24.0."}, {"lang": "es", "value": "FreeRDP es una implementaci\u00f3n gratuita del Protocolo de Escritorio Remoto. Antes de la versi\u00f3n 3.24.0, existe una lectura fuera de l\u00edmites en los decodificadores MS-ADPCM e IMA-ADPCM debido a valores de predictor y step_index no verificados de los datos de entrada. Esta vulnerabilidad se corrige en la versi\u00f3n 3.24.0."}], "id": "CVE-2026-31885", "lastModified": "2026-06-17T10:34:41.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.4, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.5, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31885", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-16T15:32:45.417089Z", "version": "2.0.3"}}]}, "published": "2026-03-13T19:54:37.537", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h23r-3988-3wf3"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h23r-3988-3wf3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "freerdp: FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks", "id": "2447383", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447383"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-125", "details": ["An out of bounds read flaw has been discovered in FreeRDP. This out-of-bounds read exists in the MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input data. An attacker may be able to leverage this weakness to leak global data."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-31885", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-13T17:38:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31885\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31885\nhttps://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h23r-3988-3wf3"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.24.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeRDP", "source": "cna", "vendor": "FreeRDP"}, "product": "freerdp", "vendor": "freerdp"}], "analysis": {"en": {"generated_at": "2026-03-17T17:19:59.389020+00:00", "value": {"mitigation_remediation": ["Update FreeRDP to version 3.24.0 or later", "Confirm that the running instance is not an older release", "If an update cannot be applied immediately, configure the system to block or reject incoming audio streams until the patch is installed"], "summary": {"action": "Patch", "impact": "Out-of-bounds read leading to possible data disclosure"}, "threat_synthesis": {"affected_systems": "All installations of FreeRDP with a release earlier than 3.24.0 are affected. The issue was fixed in release 3.24.0; any deployment using an older version must be updated.", "description_and_impact": "The vulnerability resides in the MS\u2011ADPCM and IMA\u2011ADPCM decoders of FreeRDP prior to version 3.24.0. It allows a decoder to read memory beyond the bounds of the input buffer because the predictor and step_index values extracted from the audio stream are not validated. Based on the description, it is inferred that this could expose internal memory contents to an attacker, which may be a precursor to more severe attacks.", "risk_and_exploitability": "The CVSS score of 6.5 indicates medium severity. The EPSS score is below 1% and the vulnerability is not listed in the CISA KEV catalog, which implies a low likelihood of widespread exploitation. An attacker would need to supply malicious RDP audio data to the vulnerable client or server, implying a remote attack vector that requires the ability to influence the decoding process."}}}}, "created": "2026-03-16T09:24:49.219019+00:00", "updated": "2026-03-23T13:40:40.251879+00:00", "vendors": ["freerdp", "freerdp$PRODUCT$freerdp"]}