How severe is CVE-2021-22704?

CVE-2021-22704 has a CVSS 3.x base score of 9.1, 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 none, and availability high.

Is CVE-2021-22704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22704?

CVE-2021-22704 primarily affects Schneider-electric Vijeo Designer. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22704?

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-2021-22704 published?

CVE-2021-22704 was published on 2021-09-02 and last updated on 2026-06-17.

CVE-2021-22704

CVE-2021-22704 is a critical-severity vulnerability in Schneider-electric Vijeo Designer with a CVSS 3.x base score of 9.1. 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 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Schneider-electric Vijeo Designer
Published: 2021-09-02
Last modified: 2026-06-17

Description

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory vulnerability exists in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0) that could cause a Denial of Service or unauthorized access to system information when connecting to the Harmony HMI over FTP.

Frequently asked questions

What is CVE-2021-22704?: A CWE-22: Improper Limitation of a Pathname to a Restricted Directory vulnerability exists in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0) that could cause a Denial of Service or unauthorized access to system information when connecting to the Harmony HMI over FTP.
How severe is CVE-2021-22704?: CVE-2021-22704 has a CVSS 3.x base score of 9.1, 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 none, and availability high.
Is CVE-2021-22704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22704?: CVE-2021-22704 primarily affects Schneider-electric Vijeo Designer. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22704?: 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-2021-22704 published?: CVE-2021-22704 was published on 2021-09-02 and last updated on 2026-06-17.

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-01

Affected products (4)

cpe:2.3:a:schneider-electric:vijeo_designer:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:vijeo_designer:*:*:*:*:basic:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_machine_expert:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_machine_expert:2.0:*:*:*:*:*:*:*

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