Improper input validation in Pegatron Corp. Tdelo64.sys
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.
Summary
Pegatron `Tdelo64.sys` exposes a privileged device interface, `\\.\TdeIo`, that fails to properly restrict access to sensitive IOCTL functionality. The driver's IOCTL dispatcher does not validate caller privileges or verify user-supplied kernel memory addresses before performing memory operations. By sending crafted requests to IOCTL, a local attacker can achieve arbitrary kernel memory read and write operations, leading to privilege escalation to `NT AUTHORITY\SYSTEM`, security product bypass, credential theft, or complete system compromise.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Pegatron Corp. | Tdelo64.sys | 02-17-2025 – 02-17-2025 | — | No fix listed | CNA |
- Tdelo64.sys VendorPegatron Corp. Affected 02-17-2025 – 02-17-2025 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14961
- 2026-10-03 Alias added: GHSA-qm48-7h7g-j5m2
References
More Pegatron Corp. vulnerabilities
- TI-2026-12598 Improper privilege management in Pegatron Corp. Tdelo64.sys CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-14961 · CVE Program
- CVE-2026-14961 · NVD
- FIRST EPSS
- GHSA-qm48-7h7g-j5m2 · GitHub Advisory Database · CC BY 4.0
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