No exploitation reportedFix available

CVE-2022-33939

Q: Is CVE-2022-33939 actively exploited?

Active exploitation of CVE-2022-33939 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-33939?

CVE-2022-33939 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2022-08-16
Fixed inr6.03.10 · r5.04.78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

CENTUM VP / CS 3000 controller FCS (CP31, CP33, CP345, CP401, and CP451) contains an issue in processing communication packets, which may lead to resource consumption. If this vulnerability is exploited, an attacker may cause a denial of service (DoS) condition in ADL communication by sending a specially crafted packet to the affected product.

Timeline

dates in UTC

2022-08-1608:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-33939?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-33939?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Yokogawa centum vp 3000 cp401 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	≥ r6.01.00, < r6.03.10	r6.03.10	NVD
—	≥ r5.01.00, < r5.04.78	r5.04.78	NVD
—	≥ r4.01.00, ≤ r4.03.00	no fix published	NVD

Yokogawa centum vp 3000 cp451 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	≥ r6.01.00, < r6.03.10	r6.03.10	NVD
—	≥ r5.01.00, < r5.04.78	r5.04.78	NVD
—	≥ r4.01.00, ≤ r4.03.00	no fix published	NVD

Yokogawa centum cs 3000 cp31 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-22-228-01 CISA2 known affected
Yokogawa CENTUM Controller FCS
CENTUM VP/CS 3000 controller FCS: CP31 CP33 CP345 · CENTUM VP/CS 3000 controller FCS: CP401 CP451

Full record on NVD

Fix

Update Yokogawa centum vp 3000 cp401 firmware to r6.03.10 · r5.04.78
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has listed the following products as vulnerable due to end-of-life status with no software patch available: CENTUM CS 3000
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has listed the following products as vulnerable due to end-of-life status with no software patch available: CENTUM CS 3000 Entry Class
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has listed the following products as vulnerable due to end-of-life status with no software patch available: CENTUM VP (R4.01.00 to R4.03.00)
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has listed the following products as vulnerable due to end-of-life status with no software patch available: CENTUM VP Entry Class (R4.01.00 to R4.03.00)
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has provided software patches for the following vulnerable products: CENTUM VP (R5.01.00 to R5.04.20)
Mitigation from the vendor CISA ICSA-22-228-01 · 2 productsYokogawa has provided software patches for the following vulnerable products: CENTUM VP Entry Class (R6.01.00 to R6.03.00)

Advisories and patches

web-material3.yokogawa.comVendor Advisory
web-material3.yokogawa.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2022-08-16
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-33939?

Is CVE-2022-33939 actively exploited?

Active exploitation of CVE-2022-33939 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-33939?

CVE-2022-33939 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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