How severe is CVE-2020-5609?

CVE-2020-5609 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-2020-5609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5609?

CVE-2020-5609 primarily affects Yokogawa Centum Cs 3000 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5609?

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-2020-5609 published?

CVE-2020-5609 was published on 2020-08-05 and last updated on 2026-06-17.

CVE-2020-5609

CVE-2020-5609 is a critical-severity vulnerability in Yokogawa Centum Cs 3000 Firmware 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Yokogawa Centum Cs 3000 Firmware
Published: 2020-08-05
Last modified: 2026-06-17

Description

Directory traversal vulnerability in CAMS for HIS CENTUM CS 3000 (includes CENTUM CS 3000 Small) R3.08.10 to R3.09.50, CENTUM VP (includes CENTUM VP Small, Basic) R4.01.00 to R6.07.00, B/M9000CS R5.04.01 to R5.05.01, and B/M9000 VP R6.01.01 to R8.03.01 allows a remote unauthenticated attacker to create or overwrite arbitrary files and run arbitrary commands via unspecified vectors.

Frequently asked questions

What is CVE-2020-5609?: Directory traversal vulnerability in CAMS for HIS CENTUM CS 3000 (includes CENTUM CS 3000 Small) R3.08.10 to R3.09.50, CENTUM VP (includes CENTUM VP Small, Basic) R4.01.00 to R6.07.00, B/M9000CS R5.04.01 to R5.05.01, and B/M9000 VP R6.01.01 to R8.03.01 allows a remote unauthenticated attacker to create or overwrite arbitrary files and run arbitrary commands via unspecified vectors.
How severe is CVE-2020-5609?: CVE-2020-5609 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-2020-5609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5609?: CVE-2020-5609 primarily affects Yokogawa Centum Cs 3000 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5609?: 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-2020-5609 published?: CVE-2020-5609 was published on 2020-08-05 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:yokogawa:centum_cs_3000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:centum_vp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:b\/m9000cs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:yokogawa:b\/m9000vp_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Yokogawa Centum Cs 3000 Firmware

CVE-2020-5608 — Critical (CVSS 9.8): CAMS for HIS CENTUM CS 3000 (includes CENTUM CS 3000 Small) R3.08.10 to R3.09.50, CENTUM VP (includes CENTUM VP Small,…
CVE-2015-5628 — Critical (CVSS 9.8): Stack-based buffer overflow in Yokogawa CENTUM CS 1000 R3.08.70 and earlier, CENTUM CS 3000 R3.09.50 and earlier,…
CVE-2015-5627 — Critical (CVSS 9.8): Stack-based buffer overflow in Yokogawa CENTUM CS 1000 R3.08.70 and earlier, CENTUM CS 3000 R3.09.50 and earlier,…
CVE-2015-5626 — Critical (CVSS 9.8): Stack-based buffer overflow in Yokogawa CENTUM CS 1000 R3.08.70 and earlier, CENTUM CS 3000 R3.09.50 and earlier,…
CVE-2022-30707 — High (CVSS 8.8): Violation of secure design principles exists in the communication of CAMS for HIS. Affected products and versions are…
CVE-2022-22729 — High (CVSS 8.8): CAMS for HIS Server contained in the following Yokogawa Electric products improperly authenticate the receiving…

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