CVE-2021-42794

mediumpriority · track · 21EPSS 0.012 · 68 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.20% (68th) EPSS

CVSS 5.3 · medium

Is it mine?

9 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

An issue was discovered in AVEVA Edge (formerly InduSoft Web Studio) versions R2020 and prior. The application allows a client to provide a malicious connection string that could allow an adversary to port scan the LAN, depending on the hosts' responses.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationAVEVA Edge 2020cisa_csaf_ot
AVEVA recommends organizations evaluate the impact of these vulnerabilities based on operational environment, architecture, and product implementations.

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · CISA US

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AC:L/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · cve@mitre.org USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200US

affected products (9)

Products and version ranges known to be affected.

Edge - AVEVA Edge 2020 R2 SP1all versionscisa_csaf_otUS
Edge - AVEVA Edge 2020 R2 SP1 w/ HF 2020.2.00.40all versionscisa_csaf_otUS
Edge - AVEVA Edge 2020 R2 and all prior versions (formerly known as InduSoft Web Studio)all versionscisa_csaf_otUS
AVEVA Software, LLC AVEVA Edge 2020≤ R2 (formerly known as InduSoft Web Studio)cisa_csaf_otUS
AVEVA Software, LLC AVEVA Edge 2020all versionscisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
AVEVA Software, LLC AVEVA Edge≤ 2020 R2 SP2fstec_bduRU
aveva edge< 2020nvdUScpe:2.3:a:aveva:edge:*:*:*:*:*:*:*:*
aveva edge= 2020nvdUScpe:2.3:a:aveva:edge:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-22-326-01AVEVA Edge2022-11-22icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to insert malicious DLL files and trick the application into executing code.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2023-12-16modified 2026-06-17

references (11)

External citations — patches, advisories, analysis.

scry

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