How severe is CVE-2021-22781?

CVE-2021-22781 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-22781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22781?

CVE-2021-22781 primarily affects Schneider-electric Ecostruxure Control Expert. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22781?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-22781 published?

CVE-2021-22781 was published on 2021-07-14 and last updated on 2026-06-17.

CVE-2021-22781

CVE-2021-22781 is a medium-severity vulnerability in Schneider-electric Ecostruxure Control Expert with a CVSS 3.x base score of 5.5. 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-522.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Schneider-electric Ecostruxure Control Expert
Published: 2021-07-14
Last modified: 2026-06-17

Description

Insufficiently Protected Credentials vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1, including all versions of Unity Pro), EcoStruxure Process Expert (all versions, including all versions of EcoStruxure Hybrid DCS), and SCADAPack RemoteConnect for x70, all versions, that could cause a leak of SMTP credential used for mailbox authentication when an attacker can access a project file.

Frequently asked questions

What is CVE-2021-22781?: Insufficiently Protected Credentials vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1, including all versions of Unity Pro), EcoStruxure Process Expert (all versions, including all versions of EcoStruxure Hybrid DCS), and SCADAPack RemoteConnect for x70, all versions, that could cause a leak of SMTP credential used for mailbox authentication when an attacker can access a project file.
How severe is CVE-2021-22781?: CVE-2021-22781 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-22781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22781?: CVE-2021-22781 primarily affects Schneider-electric Ecostruxure Control Expert. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22781?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22781 published?: CVE-2021-22781 was published on 2021-07-14 and last updated on 2026-06-17.

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-01

Affected products (4)

cpe:2.3:a:schneider-electric:ecostruxure_control_expert:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_control_expert:15.0:-:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_process_expert:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:remoteconnect:*:*:*:*:*:*:scadapack_x70:*

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