CVE-2021-43551

lowpriority · track · 22EPSS 0.006 · 50 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.63% (50th) EPSS

CVSS 3.5 · low

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

A remote attacker with write access to PI Vision could inject code into a display. Unauthorized information disclosure, modification, or deletion is possible if a victim views or interacts with the infected display using Microsoft Internet Explorer. The impact affects PI System data and other data accessible with victim's user permissions.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationPI Visioncisa_csaf_ot
Configure Publisher and Explorer roles in PI Vision User Access Levels to restrict which users can create or modify displays.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–6.5

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.06.5mediumCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:Nsecondary · CISA US

v3.16.5mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:Nsecondary · ics-cert@hq.dhs.gov USexploitability 1.3 · impact 4.7

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

affected products (4)

Products and version ranges known to be affected.

PI Vision - < 2021all versionscisa_csaf_otUS
OSIsoft LLC PI Vision< 2021cisa_csaf_otUS
OSIsoft PI Vision≤ All versions ≤2021enisa_euvdEU
osisoft pi vision< 2021nvdUScpe:2.3:a:osisoft:pi_vision:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-313-05OSIsoft PI Vision2021-11-09icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could lead to information disclosure, modification, or deletion.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-11-17modified 2026-06-17

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Related entries.

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+53072 more

references (4)

External citations — patches, advisories, analysis.

https://customers.osisoft.com/s/knowledgearticle?knowledgeArticleUrl=000037521Patchcnnvd
https://us-cert.cisa.gov/ics/advisories/icsa-21-313-05 cnnvd
https://us-cert.cisa.gov/ics/advisories/icsa-21-313-05 enisa_euvd
https://us-cert.cisa.gov/ics/advisories/icsa-21-313-05Third Party AdvisoryUS Government Resourcenvd

scry

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