CVE-2026-22854

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{"bugzilla": {"description": "freerdp: FreeRDP heap-buffer-overflow", "id": "2429652", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429652"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-122", "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-2026-22854", "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": "2026-01-14T17:47:49Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-22854\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-22854\nhttps://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47vj-g3c3-3rmf"], "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-18T16:16:24.872005+00:00", "value": {"mitigation_remediation": ["Upgrade to FreeRDP\u202f3.20.1 or newer to apply the heap\u2011overflow fix.", "Restart any services or clients that rely on FreeRDP after the upgrade to ensure the new binary is in use.", "If an upgrade cannot be performed immediately, disable remote drive redirection or limit it to trusted clients until the vulnerability is patched."], "summary": {"action": "Apply Patch", "impact": "Heap Buffer Overflow / Potential Remote Code Execution"}, "threat_synthesis": {"affected_systems": "All releases of FreeRDP before version 3.20.1 are vulnerable. The advisory confirms that the issue was fixed in the 3.20.1 release. Any installation that relies on a prior version, regardless of operating system or deployment scenario, should be considered affected.", "description_and_impact": "FreeRDP, a free implementation of the Remote Desktop Protocol, contains a heap\u2011buffer\u2011overflow flaw in the drive_process_irp_read function. The vulnerability arises when a server\u2011controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. Based on the description, it is inferred that an attacker who can supply such an oversized read length could overwrite vital heap structures and potentially execute arbitrary code. The flaw is categorized as CWE\u2011122 and can lead to corruption of adjacent memory structures, potentially enabling remote code execution.", "risk_and_exploitability": "The CVSS score of 6.8 indicates moderate severity, while the EPSS score of <\u202f1\u202f% suggests a very low likelihood of exploitation at present. The vulnerability is not listed in CISA\u2019s KEV catalog, implying no known widespread attacks. The likely attack vector is remote, requiring an attacker to gain an RDP session that employs remote drive redirection. By crafting a read request with an oversized length, an attacker could trigger the heap overflow and potentially execute code on the host. Because the exploit requires the attacker to control the read length, the opportunity is limited, but the condition is present and not mitigated without patching."}}}}, "created": "2026-01-15T08:03:09.164125+00:00", "updated": "2026-04-18T16:30:05.068661+00:00", "vendors": ["freerdp", "freerdp$PRODUCT$freerdp"]}