Red Hat Security Advisory: freerdp security update
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Security Fix(es): * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948) * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This advisory covers multiple vulnerabilities in FreeRDP, including heap-use-after-free (e.g., CVE-2026-22856, CVE-2026-24675), heap-buffer-overflow (e.g., CVE-2026-22852, CVE-2026-22854, CVE-2026-24679), NULL pointer dereference (CVE-2026-23948), denial of service via buffer overflow and use-after-free (CVE-2026-23732, CVE-2026-24676), and arbitrary code execution via crafted RDP server messages (CVE-2026-31806). These vulnerabilities affect the FreeRDP client implementation and could allow attackers to cause crashes, denial of service, or potentially execute arbitrary code. Red Hat has issued updated packages for Red Hat Enterprise Linux 9.4 Extended Update Support and related variants to remediate these issues.
Potential Impact
The vulnerabilities can lead to denial of service conditions through crashes caused by heap-use-after-free, buffer overflows, and NULL pointer dereferences. The most severe issue (CVE-2026-31806) allows arbitrary code execution via crafted RDP server messages, which could enable an attacker to execute code on the client system. These issues affect the security and stability of systems using the FreeRDP client to connect to RDP servers.
Mitigation Recommendations
Red Hat has released updated packages for FreeRDP in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. Users should apply these official security updates as detailed in Red Hat advisory RHSA-2026:6958 to remediate the vulnerabilities. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation is indicated by the vendor advisory.
Red Hat Security Advisory: freerdp security update
Description
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Security Fix(es): * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948) * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers multiple vulnerabilities in FreeRDP, including heap-use-after-free (e.g., CVE-2026-22856, CVE-2026-24675), heap-buffer-overflow (e.g., CVE-2026-22852, CVE-2026-22854, CVE-2026-24679), NULL pointer dereference (CVE-2026-23948), denial of service via buffer overflow and use-after-free (CVE-2026-23732, CVE-2026-24676), and arbitrary code execution via crafted RDP server messages (CVE-2026-31806). These vulnerabilities affect the FreeRDP client implementation and could allow attackers to cause crashes, denial of service, or potentially execute arbitrary code. Red Hat has issued updated packages for Red Hat Enterprise Linux 9.4 Extended Update Support and related variants to remediate these issues.
Potential Impact
The vulnerabilities can lead to denial of service conditions through crashes caused by heap-use-after-free, buffer overflows, and NULL pointer dereferences. The most severe issue (CVE-2026-31806) allows arbitrary code execution via crafted RDP server messages, which could enable an attacker to execute code on the client system. These issues affect the security and stability of systems using the FreeRDP client to connect to RDP servers.
Mitigation Recommendations
Red Hat has released updated packages for FreeRDP in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. Users should apply these official security updates as detailed in Red Hat advisory RHSA-2026:6958 to remediate the vulnerabilities. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation is indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6958
- Cve Count
- 13
- Additional Cves
- ["CVE-2026-22854","CVE-2026-22856","CVE-2026-23732","CVE-2026-23948","CVE-2026-24491","CVE-2026-24675","CVE-2026-24676","CVE-2026-24679","CVE-2026-24681","CVE-2026-24683","CVE-2026-24684","CVE-2026-31806"]
- Cvss Version
- null
Threat ID: 6a27e9928dd33fbd851699cb
Added to database: 6/9/2026, 10:23:14 AM
Last enriched: 6/9/2026, 10:34:01 AM
Last updated: 6/10/2026, 4:59:02 AM
Views: 2
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