CVE-2026-122166
A NVD · · CVE-2026-122166
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- CVSS
- 7.8
- EPSS
- 0%
Key insight
CVE-2026-122166 affects Windows Remote Desktop Services, which is part of the company's Microsoft Remote Desktop Gateway and Windows Server infrastructure, but requires local authorized access to exploit.
Description
CVE-2026-122166 is a vulnerability in Windows Remote Desktop Services based on a stack-based buffer overflow. An authorized attacker can exploit the vulnerability locally to elevate privileges. There is no information about active exploitation or public exploits. Affected are Windows systems with enabled Remote Desktop Services. The severity is not further specified at this time.
Risk score
- cvss base
- 78.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 78.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 0.75
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational
MITRE ATT&CK mapping
1 TTPProcedure details
| Technique | Tactic | Procedure | Conf. | Source |
|---|---|---|---|---|
| T1068 Exploitation for Privilege Escalation | Privilege Escalation | An authorized attacker exploits a stack-based buffer overflow in Windows Remote Desktop Services to execute code and elevate privileges locally. | high | llm |