How severe is CVE-2015-5626?

CVE-2015-5626 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-5626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5626?

CVE-2015-5626 primarily affects Yokogawa Exaopc. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5626?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-5626 published?

CVE-2015-5626 was published on 2020-02-05 and last updated on 2026-06-17.

CVE-2015-5626

CVE-2015-5626 is a critical-severity vulnerability in Yokogawa Exaopc with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Yokogawa Exaopc
Published: 2020-02-05
Last modified: 2026-06-17

Description

Stack-based buffer overflow in Yokogawa CENTUM CS 1000 R3.08.70 and earlier, CENTUM CS 3000 R3.09.50 and earlier, CENTUM CS 3000 Entry R3.09.50 and earlier, CENTUM VP R5.04.20 and earlier, CENTUM VP Entry R5.04.20 and earlier, ProSafe-RS R3.02.10 and earlier, Exaopc R3.72.00 and earlier, Exaquantum R2.85.00 and earlier, Exaquantum/Batch R2.50.30 and earlier, Exapilot R3.96.10 and earlier, Exaplog R3.40.00 and earlier, Exasmoc R4.03.20 and earlier, Exarqe R4.03.20 and earlier, Field Wireless Device OPC Server R2.01.02 and earlier, PRM R3.12.00 and earlier, STARDOM VDS R7.30.01 and earlier, STARDOM OPC Server for Windows R3.40 and earlier, FAST/TOOLS R10.01 and earlier, B/M9000CS R5.05.01 and earlier, B/M9000 VP R7.03.04 and earlier, and FieldMate R1.01 or R1.02 allows remote attackers to cause a denial of service (network-communications outage) via a crafted packet.

Frequently asked questions

What is CVE-2015-5626?: Stack-based buffer overflow in Yokogawa CENTUM CS 1000 R3.08.70 and earlier, CENTUM CS 3000 R3.09.50 and earlier, CENTUM CS 3000 Entry R3.09.50 and earlier, CENTUM VP R5.04.20 and earlier, CENTUM VP Entry R5.04.20 and earlier, ProSafe-RS R3.02.10 and earlier, Exaopc R3.72.00 and earlier, Exaquantum R2.85.00 and earlier, Exaquantum/Batch R2.50.30 and earlier, Exapilot R3.96.10 and earlier, Exaplog R3.40.00 and earlier, Exasmoc R4.03.20 and earlier, Exarqe R4.03.20 and earlier, Field Wireless Device OPC Server R2.01.02 and earlier, PRM R3.12.00 and earlier, STARDOM VDS R7.30.01 and earlier, STARDOM OPC Server for Windows R3.40 and earlier, FAST/TOOLS R10.01 and earlier, B/M9000CS R5.05.01 and earlier, B/M9000 VP R7.03.04 and earlier, and FieldMate R1.01 or R1.02 allows remote attackers to cause a denial of service (network-communications outage) via a crafted packet.
How severe is CVE-2015-5626?: CVE-2015-5626 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-5626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5626?: CVE-2015-5626 primarily affects Yokogawa Exaopc. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-5626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-5626 published?: CVE-2015-5626 was published on 2020-02-05 and last updated on 2026-06-17.

References

Affected products (22)

cpe:2.3:o:yokogawa:centum_cs_1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:centum_cs_3000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:centum_cs_3000_entry_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:centum_vp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:centum_vp_entry_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:prosafe-rs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exaopc:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exapilot:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exaplog:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exaquantum:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exaquantum\/batch:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exarqe:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:exasmoc:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:field_wireless_device_opc_server:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:plant_resource_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:scada_software_\(fast\/tools\):*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:versatile_data_server_software:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:b\/m9000cs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:b\/m9000_vp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:fieldmate:r1.01:*:*:*:*:*:*:*
cpe:2.3:a:yokogawa:fieldmate:r1.02:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:stardom_opc_server:*:*:*:*:*:windows:*:*

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