RHSA-2026:98469: Important: 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: Remote code execution or client crash via malicious TS Gateway (CVE-2026-55193) FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954) FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964) FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956) FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963) FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959) FreeRDP: FreeRDP: Heap buffer overflow via oversized LBLOADBALANCEINFO routing token can lead to heap corruption. (CVE-2026-91953) 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/freerdpto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdp-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdp-debugsourceto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdp-libsto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdp-libs-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/libwinprto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/libwinpr-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdpto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/freerdp-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/freerdp-debugsourceto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/freerdp-libsto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/freerdp-libs-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/libwinprto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/libwinpr-debuginfoto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/freerdp-develto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/libwinpr-develto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2 - Upgrade
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redhat/freerdp-develto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa - Upgrade
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redhat/libwinpr-develto a version that resolves this vulnerability.Fixed in 2.11.7-13.el9_9.2.aa
Event History
Frequently Asked Questions
Which FreeRDP components should be considered in scope for this update?
The advisory lists the freerdp client and libraries, along with libwinpr. Development, debug, debuginfo, and debugsource package variants are also listed.
What kinds of remote inputs can trigger the reported issues?
The issues are associated with a malicious TS Gateway, crafted Surface Bits commands, Server Redirection PDUs, the URBDRC channel, RPC gateway traffic, and oversized LB_LOAD_BALANCE_INFO routing tokens. Reported impacts include remote code execution, client crashes, heap corruption, memory disclosure, and denial of service.
Are only client connections affected?
The provided information specifically identifies xfreerdp as an RDP client and describes attacker-controlled gateway and RDP protocol inputs. It does not provide enough detail to determine which configurations or connection modes are affected by each CVE.