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CVE-2026-9853

High8.5

A vulnerability exists in SYS600 which allows any user authenticated to the operating system of the server hosting the application to read and modify application objects without being authenticated to the SYS600 system itself. Only the SYS600 system users should be permitted to view and modify application objects.

CVSS
8.5v4.0
EPSS (exploit probability)
0.1%3th pct
CISA KEV
Not listed

EPSS trendFIRST daily scores, last 90 days

FIRST EPSS held steady from 0.1% on 2026-09-18 to 0.1% on 2026-10-20, ranging 0.1%–0.1% across 31 daily scores.
2026-09-18 → 2026-10-20 · 31 days · 0.1%–0.1%
Daily values
FIRST EPSS daily scores for this CVE
Score dateEPSSPercentile
2026-10-200.1%3.4%
2026-10-190.1%3.3%
2026-10-180.1%3.3%
2026-10-160.1%3.3%
2026-10-150.1%3.3%
2026-10-140.1%3.3%
2026-10-130.1%3.3%
2026-10-120.1%3.2%
2026-10-110.1%3.2%
2026-10-100.1%3.2%
2026-10-090.1%3.2%
2026-10-080.1%3.2%
2026-10-070.1%3.2%
2026-10-060.1%3.2%
2026-10-050.1%3.2%
2026-10-040.1%3.2%
2026-10-030.1%3.2%
2026-10-020.1%3.2%
2026-10-010.1%3.1%
2026-09-300.1%3.1%
2026-09-290.1%3.1%
2026-09-270.1%3.1%
2026-09-260.1%3.1%
2026-09-250.1%3.1%
2026-09-240.1%3.0%
2026-09-230.1%2.6%
2026-09-220.1%2.6%
2026-09-210.1%2.6%
2026-09-200.1%2.6%
2026-09-190.1%2.6%
2026-09-180.1%2.6%

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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

Affected products

  • hitachienergy microscada x sys600

Coverage1 article

References

Facts sourced from NVD, FIRST EPSS, and CISA KEV. Last synced 2026-10-21 07:34 UTC.

  • CVSS & description: NVD 2.0, fetched 2026-10-21 06:34 UTC
  • EPSS: FIRST EPSS, fetched 2026-10-21 07:34 UTC; score date 2026-10-20
  • KEV: CISA KEV, fetched 2026-10-21 07:34 UTC