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
FreeRDP contains multiple memory corruption and denial of service vulnerabilities, including heap-use-after-free (CVE-2026-22856, CVE-2026-24491, CVE-2026-24675, CVE-2026-24681, CVE-2026-24683, CVE-2026-24684), heap-buffer-overflow (CVE-2026-22852, CVE-2026-22854, CVE-2026-24679), NULL pointer dereference (CVE-2026-23948), denial of service via FastGlyph parsing buffer overflow (CVE-2026-23732) and AUDIN format renegotiation use-after-free (CVE-2026-24676). Critically, CVE-2026-31806 allows arbitrary code execution via crafted RDP server messages. These vulnerabilities affect the FreeRDP client implementation in Red Hat Enterprise Linux 9 and related products. Red Hat has released updated packages to address these issues as detailed in advisory RHSA-2026:6340.
Potential Impact
The vulnerabilities can lead to denial of service conditions and potentially allow arbitrary code execution on systems running vulnerable FreeRDP versions. Heap-use-after-free and heap-buffer-overflow issues may cause crashes or memory corruption. The arbitrary code execution vulnerability (CVE-2026-31806) poses a critical risk if exploited, allowing attackers to execute code via malicious RDP server messages. These issues impact the security and stability of systems using FreeRDP clients on affected Red Hat Enterprise Linux 9 platforms.
Mitigation Recommendations
Red Hat has released updated freerdp packages for Red Hat Enterprise Linux 9 and related CodeReady Linux Builder variants that address these vulnerabilities. Users should apply the security update described in Red Hat advisory RHSA-2026:6340 promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation actions are specified beyond applying the official patches.
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
FreeRDP contains multiple memory corruption and denial of service vulnerabilities, including heap-use-after-free (CVE-2026-22856, CVE-2026-24491, CVE-2026-24675, CVE-2026-24681, CVE-2026-24683, CVE-2026-24684), heap-buffer-overflow (CVE-2026-22852, CVE-2026-22854, CVE-2026-24679), NULL pointer dereference (CVE-2026-23948), denial of service via FastGlyph parsing buffer overflow (CVE-2026-23732) and AUDIN format renegotiation use-after-free (CVE-2026-24676). Critically, CVE-2026-31806 allows arbitrary code execution via crafted RDP server messages. These vulnerabilities affect the FreeRDP client implementation in Red Hat Enterprise Linux 9 and related products. Red Hat has released updated packages to address these issues as detailed in advisory RHSA-2026:6340.
Potential Impact
The vulnerabilities can lead to denial of service conditions and potentially allow arbitrary code execution on systems running vulnerable FreeRDP versions. Heap-use-after-free and heap-buffer-overflow issues may cause crashes or memory corruption. The arbitrary code execution vulnerability (CVE-2026-31806) poses a critical risk if exploited, allowing attackers to execute code via malicious RDP server messages. These issues impact the security and stability of systems using FreeRDP clients on affected Red Hat Enterprise Linux 9 platforms.
Mitigation Recommendations
Red Hat has released updated freerdp packages for Red Hat Enterprise Linux 9 and related CodeReady Linux Builder variants that address these vulnerabilities. Users should apply the security update described in Red Hat advisory RHSA-2026:6340 promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation actions are specified beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6340
- 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: 6a27e9928dd33fbd85169e29
Added to database: 6/9/2026, 10:23:14 AM
Last enriched: 6/9/2026, 10:35:00 AM
Last updated: 6/10/2026, 5:13:14 AM
Views: 2
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