Critical [CVE-2026-72745] Information disclosure and memory corruption via malformed Kerberos GSS Wrap token
This critical-severity Red Hat Linux advisory covers CVE-2026-72745 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
A flaw was found in FreeRDP. A malicious peer, either a server or client, can exploit an out-of-bounds vulnerability during CredSSP/NLA authentication.
By supplying a large 'extra count' (EC) value in a Kerberos GSS Wrap token, an attacker can cause the decryption operation to access memory outside of its intended buffer. This can lead to information disclosure, memory corruption, or a denial of service.
Critical: FreeRDP in Red Hat environments is susceptible to a critical out-of-bounds vulnerability during CredSSP/NLA authentication. This risk is present when a completed Kerberos NLA context is established.
Red Hat severity: Critical — CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-823.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: freerdp.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- To reduce exposure, restrict FreeRDP server access to trusted clients only. When using FreeRDP as a client, avoid connecting to untrusted RDP servers. If CredSSP/NLA authentication is not strictly required, consider using alternative, secure authentication methods or protocols if available and supported by your FreeRDP configuration.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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