by Kastro
Paper/Archive/CVE-2026-90647

CVE-2026-90647

Kalkitech ASE2000 V2 Communication Test Set — ASE/Kalkitech ASE2000 V2 Communication Test Set 2.35 through 2.37 on Windows contains an improper certificate validation vulnerability in…

EPSS 0.2%CVSS 9.1
critical.is priorityof 100
30
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 11.7.117 × 202.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

ASE/Kalkitech ASE2000 V2 Communication Test Set 2.35 through 2.37 on Windows contains an improper certificate validation vulnerability in the IEC 60870-5-104 TLS client (Task Mode). This allows a network-positioned attacker to bypass certificate validation via a certificate with multiple simultaneous faults, enabling a Man-in-the-Middle attack on protected communications.

Affected

ProductAffectedFixed inSource
ASE2000 V2 Communication Test Set2.35 – < 2.382.38CNA

Scores by source

mitre (CNA)9.1CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
mitre (CNA)7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisoryase-systems.com/wp-content/uploads/2026/07/CYB_2026_86278_Advisory_v1.0.pdf