CVE-2026-22542
DENIAL OF SERVICE FOR CONCURRENT CONNECTIONS ON TELNET
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
DENIAL OF SERVICE FOR CONCURRENT CONNECTIONS ON TELNET
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
- Record
CVE-2026-22542- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2026-1211
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
- Record
EUVD-2026-1211- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-gqqp-9725-vwp7
An attacker with access to the system's internal network can cause a denial of service on the...
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
- Record
GHSA-gqqp-9725-vwp7- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
- Record
CVE-2026-22542- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-22542 is a critical vulnerability (CVSS 9.2) in Efacec Qc 60/90/120, published January 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. No source names a fixed version.