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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*", "matchCriteriaId": "1C802721-4198-476F-AE9E-78457C1CE38B", "versionEndExcluding": "3.20.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. This vulnerability is fixed in 3.20.1."}], "id": "CVE-2026-22855", "lastModified": "2026-01-20T18:36:35.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-01-14T18:16:43.080", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory", "Exploit"], "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "freerdp: FreeRDP heap-buffer-overflow", "id": "2429645", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429645"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["No description is available for this CVE."], "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-2026-22855", "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": "2026-01-14T17:50:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-22855\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-22855\nhttps://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9"], "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-18T06:18:26.392188+00:00", "value": {"mitigation_remediation": ["Upgrade FreeRDP to version\u00a03.20.1 or later, which patches the bounds check for smartcard SetAttrib.", "Disable smartcard support in FreeRDP configuration if the feature is not required, thereby preventing the vulnerable code from executing.", "Monitor RDP traffic for unusual smartcard activity and consider blocking remote hosts that do not require smartcard access."], "summary": {"action": "Apply Patch", "impact": "Memory Corruption"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the FreeRDP client implementation for all releases prior to version\u202f3.20.1. Systems running any older FreeRDP build are exposed when the smartcard feature is enabled.", "description_and_impact": "FreeRDP includes a heap out\u2011of\u2011bounds read when the cbAttrLen parameter does not match the actual buffer length in the smartcard SetAttrib call. The flaw is a read vulnerability that could allow an attacker to read unintended data from memory or cause the client to crash, resulting in information disclosure or denial of service. It is classified as CWE\u2011125.", "risk_and_exploitability": "The severity is a moderate CVSS score of\u202f5.6 and an EPSS probability of less than\u202f1\u202f%, and it is not listed in the CISA KEV catalog. Attackers would need to trigger a smartcard SetAttrib request, which can be performed over an RDP session that permits smartcard redirection. The exploit path requires remote or local RDP access with smartcard support enabled; no additional prerequisites are mentioned in the description."}}}}, "created": "2026-01-15T08:03:10.493818+00:00", "updated": "2026-04-18T06:30:25.901557+00:00", "vendors": ["freerdp", "freerdp$PRODUCT$freerdp"]}