Red Hat Security Advisory: freerdp security update
Multiple vulnerabilities have been identified in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP) used by the xfreerdp client to connect to various RDP servers. These vulnerabilities include heap-buffer-overflow, use-after-free, out-of-bounds write, and crafted packet issues that could lead to remote code execution or denial of service. The issues affect FreeRDP versions included with Red Hat Enterprise Linux 10 and related CodeReady Linux Builder packages. Red Hat has issued an important security advisory with updates addressing these vulnerabilities.
AI Analysis
Technical Summary
The FreeRDP client contains multiple critical security flaws: a heap-buffer-overflow in the gdi_CacheToSurface function (CVE-2026-40033), a heap use-after-free in the RDPEAR NDR parser (CVE-2026-44422), an out-of-bounds write in the planar bitmap decoder (CVE-2026-45700), arbitrary code execution via crafted RDPGFX PDUs (CVE-2026-44421), and another heap-buffer-overflow leading to arbitrary code execution or denial of service (CVE-2026-44420). These vulnerabilities allow remote attackers to execute arbitrary code or cause denial of service when the xfreerdp client processes specially crafted RDP data. Red Hat has released updated packages for Red Hat Enterprise Linux 10 and related builder variants to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could allow remote attackers to execute arbitrary code on systems running vulnerable versions of FreeRDP or cause denial of service conditions. This impacts the security and stability of systems using the xfreerdp client to connect to RDP servers. The vulnerabilities are rated with high severity by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated freerdp packages for Red Hat Enterprise Linux 10 and related CodeReady Linux Builder variants that address these vulnerabilities. Users should apply the security updates as described in the Red Hat advisory RHSA-2026:36203 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are indicated; applying the official patches is the recommended remediation.
Red Hat Security Advisory: freerdp security update
Description
Multiple vulnerabilities have been identified in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP) used by the xfreerdp client to connect to various RDP servers. These vulnerabilities include heap-buffer-overflow, use-after-free, out-of-bounds write, and crafted packet issues that could lead to remote code execution or denial of service. The issues affect FreeRDP versions included with Red Hat Enterprise Linux 10 and related CodeReady Linux Builder packages. Red Hat has issued an important security advisory with updates addressing these vulnerabilities.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The FreeRDP client contains multiple critical security flaws: a heap-buffer-overflow in the gdi_CacheToSurface function (CVE-2026-40033), a heap use-after-free in the RDPEAR NDR parser (CVE-2026-44422), an out-of-bounds write in the planar bitmap decoder (CVE-2026-45700), arbitrary code execution via crafted RDPGFX PDUs (CVE-2026-44421), and another heap-buffer-overflow leading to arbitrary code execution or denial of service (CVE-2026-44420). These vulnerabilities allow remote attackers to execute arbitrary code or cause denial of service when the xfreerdp client processes specially crafted RDP data. Red Hat has released updated packages for Red Hat Enterprise Linux 10 and related builder variants to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could allow remote attackers to execute arbitrary code on systems running vulnerable versions of FreeRDP or cause denial of service conditions. This impacts the security and stability of systems using the xfreerdp client to connect to RDP servers. The vulnerabilities are rated with high severity by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated freerdp packages for Red Hat Enterprise Linux 10 and related CodeReady Linux Builder variants that address these vulnerabilities. Users should apply the security updates as described in the Red Hat advisory RHSA-2026:36203 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are indicated; applying the official patches is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:36203
- Cve Count
- 5
- Additional Cves
- ["CVE-2026-44420","CVE-2026-44421","CVE-2026-44422","CVE-2026-45700"]
- Cvss Version
- null
Threat ID: 6a4e4efdc9d9e3dbe328d202
Added to database: 07/08/2026, 13:22:05 UTC
Last enriched: 07/30/2026, 23:08:21 UTC
Last updated: 08/22/2026, 10:52:08 UTC
Views: 147
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