CVE-2026-63117
CVE-2026-63117: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium6.5
Medium [CVE-2026-63117] Denial of Service via ADPCM frame size calculation
CVE-2026-63117Source published Source updated
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, an authenticated RDP client can advertise DVI ADPCM with nBlockAlign equal to 8 and nChannels equal to 2 to make the `bs` calculation in rdpsnd_server_select_format in channels/rdpsnd/server/rdpsnd_main.c equal zero. The subsequent out_frames modulo `bs` operation raises SIGFPE and terminates the server-side rdpsnd channel process. This vulnerability fixed in 3.28.0. An authenticated Remote Desktop Protocol (RDP) client can trigger a denial of service by sending a specially crafted DVI ADPCM frame. By advertising specific nBlockAlign and nChannels values, a division-by-zero error occurs in the rdpsnd_server_select_format function. This vulnerability leads to the termination of the server-side rdpsnd channel…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
1 more entries in the full advisory.
- Source-reported affected versions
- < 3.28.0
- Source-reported fixed versions
- 3.28.0
- Mitigation guidance
- To mitigate this issue, administrators can disable audio redirection on the FreeRDP server configuration if remote audio support is not strictly required.
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