CVE-2026-18768
A NVD · · CVE-2026-18768
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
The report describes local privilege escalation in the Beckhoff TwinCAT driver TcRouter.sys; there are no indications of active exploitation or an attack campaign.
Description
CVE-2026-18768 affects the TcRouter.sys driver used in Beckhoff TwinCAT environments. Through exposed IOCTL function calls, a locally authenticated low-privileged attacker can access arbitrary physical memory or define its mapping. This allows full compromise of the affected system. The vulnerability requires local access; the report contains no information on active exploitation, proof-of-concept, or KEV inclusion.
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