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    2 vulnerabilities found for moonlight-qt by moonlight-stream

    CVE-2026-41210 (GCVE-0-2026-41210)

    Vulnerability from nvd – Published: 2026-10-12 21:25 – Updated: 2026-10-13 15:02
    VLAI
    Title
    Moonlight Qt: Remote heap buffer overflow in Moonlight Qt H.264 SPS fixup path via crafted seq_parameter_set_id
    Summary
    Moonlight Qt is a GameStream client for Windows, macOS, Linux, and Steam Link. In version 6.1.0 and earlier, after a victim initiates a streaming session to a malicious host, the host can send a crafted H.264 SPS NAL when Moonlight selects a decoder path that does not advertise CAPABILITY_REFERENCE_FRAME_INVALIDATION_AVC. The SPS fixup path in app/streaming/video/ffmpeg.cpp parses the server-provided data with h264bitstream, where attacker-controlled seq_parameter_set_id is used to index the 32-entry sps_table without validation. A value of 32 or greater causes an out-of-bounds write and remote heap corruption in the Moonlight client. The demonstrated impact is a reliable client crash, while code execution is not established. This issue is fixed in version 6.2.0.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-13 15:02 UTC
    CWE
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7745 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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          "vendor": "moonlight-stream",
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        }
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          "name": "https://github.com/moonlight-stream/moonlight-qt/releases/tag/v6.2.0",
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          "url": "https://github.com/moonlight-stream/moonlight-qt/releases/tag/v6.2.0"
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        "discovery": "UNKNOWN"
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      "title": "Moonlight Qt: Remote heap buffer overflow in Moonlight Qt H.264 SPS fixup path via crafted seq_parameter_set_id"
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    CVE-2026-41210 (GCVE-0-2026-41210)

    Vulnerability from cvelistv5 – Published: 2026-10-12 21:25 – Updated: 2026-10-13 15:02
    VLAI
    Title
    Moonlight Qt: Remote heap buffer overflow in Moonlight Qt H.264 SPS fixup path via crafted seq_parameter_set_id
    Summary
    Moonlight Qt is a GameStream client for Windows, macOS, Linux, and Steam Link. In version 6.1.0 and earlier, after a victim initiates a streaming session to a malicious host, the host can send a crafted H.264 SPS NAL when Moonlight selects a decoder path that does not advertise CAPABILITY_REFERENCE_FRAME_INVALIDATION_AVC. The SPS fixup path in app/streaming/video/ffmpeg.cpp parses the server-provided data with h264bitstream, where attacker-controlled seq_parameter_set_id is used to index the 32-entry sps_table without validation. A value of 32 or greater causes an out-of-bounds write and remote heap corruption in the Moonlight client. The demonstrated impact is a reliable client crash, while code execution is not established. This issue is fixed in version 6.2.0.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-13 15:02 UTC
    CWE
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7745 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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