CVE-2026-54990 — Heap-based buffer overflow in Remote Desktop Client allows…
CVE-2026-54990 — Heap-based buffer overflow in Remote Desktop Client allows… has a recently disclosed critical-severity vulnerability (CVE-2026-54990). It has not been reported as actively exploited — patch it proactively as part of your normal cycle before that changes.
What is this vulnerability?
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
How it works
This is classified as CWE-122. In plain terms, an attacker could use this flaw in the affected product to gain access, disrupt service, or steal data — the exact impact depends on how it’s deployed in your environment.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Mitigations
- Apply the vendor’s security patch or update as soon as it’s available and tested.
- If no patch exists yet, apply the vendor’s temporary workaround.
- Limit network exposure of the affected system until it’s patched.
- Track the vendor advisory — disclosed vulnerabilities can move to active exploitation quickly.
Recommendations
- Confirm whether this vendor’s affected product is used anywhere in your environment.
- Patch internet-facing systems first, then internal ones.
- Prioritise by exposure and exploitability while a fix is scheduled.
- Subscribe to the vendor’s security advisories for earlier warning next time.
Compiled from the National Vulnerability Database (NVD), referenced in 1 public advisories. Listed as recently disclosed — not confirmed exploited.