CVE-2026-118737
A NVD · · CVE-2026-118737
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
- 8.1
- EPSS
- 0%
Key insight
The alert merely describes an unspecified RPC vulnerability without indications of active exploitation, PoCs, or specific attack patterns.
Description
CVE-2026-118737 affects Windows Remote Procedure Call Runtime. Due to improper verification of cryptographic signatures, an unauthenticated attacker can execute code over the network. The alert does not name affected Windows versions, a CVSS score, or patch status. There are no indications of active exploitation, public PoCs, or KEV inclusion.
Risk score
- cvss base
- 81.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 81.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational
MITRE ATT&CK mapping
1 TTPProcedure details
| Technique | Tactic | Procedure | Conf. | Source |
|---|---|---|---|---|
| T1210 Exploitation of Remote Services | Lateral Movement | An attacker exploits CVE-2026-118737 by sending crafted RPC requests to a vulnerable Windows system, leveraging improper cryptographic signature verification in Windows Remote Procedure Call Runtime to execute arbitrary code over the network. | high | llm |