No exploitation reportedFix available

CVE-2021-22797

Q: Is CVE-2021-22797 actively exploited?

Active exploitation of CVE-2021-22797 has not been confirmed. Its EPSS score was 26.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-22797?

CVE-2021-22797 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-04-13
Fixed in15.1
WeaknessCWE-22

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

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal) vulnerability exists that could cause malicious script to be deployed in an unauthorized location and may result in code execution on the engineering workstation when a malicious project file is loaded in the engineering software. Affected Product: EcoStruxure Control Expert (V15.0 SP1 and prior, including former Unity Pro), EcoStruxure Process Expert (2020 and prior, including former HDCS), SCADAPack RemoteConnect for x70 (All versions)

Timeline

dates in UTC

2022-04-1316:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

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-2021-22797?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22797?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Schneider-electric ecostruxure control expert

Branch	Affected	Fixed in	Source
15.1	< 15.1	15.1	NVD

Schneider-electric ecostruxure process expert

Branch	Affected	Fixed in	Source
2021.x	< 2021	2021	NVD

Schneider-electric remoteconnectversion to verify

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

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-21-259-02 CISA3 known affected
Schneider Electric EcoStruxure and SCADAPack
EcoStruxure Process Expert: All versions including former HDCS · SCADAPack RemoteConnect for x70: All versions · EcoStruxure Control Expert: All versions including former Unity Pro

Full record on NVD

Fix

Update Schneider-electric ecostruxure control expert to 15.1
Vendor fix CISA ICSA-21-259-02 · 3 productsHarden the workstations running EcoStruxure Control Expert, EcoStruxure Process Expert, or SCADAPack RemoteConnect.
Vendor fix CISA ICSA-21-259-02 · 3 productsUsers still using Unity Pro should strongly consider migrating to EcoStruxure Control Expert. Please contact the local Schneider Electric technical support for more information.
Mitigation from the vendor CISA ICSA-21-259-02 · 3 productsStore project files in a secure storage location and limit access to the files to only trusted users.
Mitigation from the vendor CISA ICSA-21-259-02 · 3 productsWhen exchanging the files over the network, use secure communication protocols.
Mitigation from the vendor CISA ICSA-21-259-02 · 3 productsCompute a checksum on all project files and check the consistency of the checksum to verify the integrity before usage.
Mitigation from the vendor CISA ICSA-21-259-02 · 3 productsStart the software without administrator rights to prevent the copying of extracted files in critical system folders.

Advisories and patches

www.se.comMitigation · Patch · Vendor Advisory

Detection

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

Sources

CNACVSS 3.17.8read 2026-10-23
NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
CNAweakness (CWE)CWE-22read 2026-10-23
FIRST EPSSEPSS score26.1 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2022-04-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-22797?

Is CVE-2021-22797 actively exploited?

Active exploitation of CVE-2021-22797 has not been confirmed. Its EPSS score was 26.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-22797?

CVE-2021-22797 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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