CVE-2026-67300
CVE-2026-67300: 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-2026-67300] Use-After-Free vulnerability leading to denial of service
CVE-2026-67300Source published Source updated
FreeRDP before 3.29.0 contains client-side heap use-after-free vulnerabilities in the async update message proxy for RAIL WINDOW_STATE_ORDER and NOTIFY_ICON_STATE_ORDER when AsyncUpdate is enabled. When a malicious or compromised RDP server sends crafted update orders, the message proxy shallow-copies structures containing nested parser-owned pointers (e.g., titleInfo.string, windowRects, visibilityRects, icon buffers). The parser frees those nested buffers after the callback returns, so the queued async message later dispatches stale pointers, potentially causing memory corruption or a client crash. A flaw was found in FreeRDP. This client-side heap use-after-free vulnerability occurs when a malicious or compromised Remote Desktop Protocol (RDP) server sends specially crafted update…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
2 more entries in the full advisory.
- Source-reported affected versions
- < 3.29.0
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- To mitigate this issue, avoid connecting to untrusted RDP servers. Additionally, if possible, disable the `AsyncUpdate` feature in FreeRDP clients to prevent the vulnerable code path from being exercised. Consult FreeRDP documentation for specific configuration options to disable `AsyncUpdate`.
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