How severe is CVE-2021-22669?

CVE-2021-22669 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22669 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22669?

CVE-2021-22669 affects Advantech Webaccess/scada. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22669?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-22669 published?

CVE-2021-22669 was published on 2021-04-26 and last updated on 2026-06-17.

CVE-2021-22669

CVE-2021-22669 is a high-severity vulnerability in Advantech Webaccess/scada with a CVSS 3.x base score of 8.8. 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-732.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Advantech Webaccess/scada
Published: 2021-04-26
Last modified: 2026-06-17

Description

Incorrect permissions are set to default on the ‘Project Management’ page of WebAccess/SCADA portal of WebAccess/SCADA Versions 9.0.1 and prior, which may allow a low-privileged user to update an administrator’s password and login as an administrator to escalate privileges on the system.

Frequently asked questions

What is CVE-2021-22669?: Incorrect permissions are set to default on the ‘Project Management’ page of WebAccess/SCADA portal of WebAccess/SCADA Versions 9.0.1 and prior, which may allow a low-privileged user to update an administrator’s password and login as an administrator to escalate privileges on the system.
How severe is CVE-2021-22669?: CVE-2021-22669 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22669 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22669?: CVE-2021-22669 affects Advantech Webaccess/scada. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22669?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-22669 published?: CVE-2021-22669 was published on 2021-04-26 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-103-02

Affected products (1)

cpe:2.3:a:advantech:webaccess\/scada:*:*:*:*:*:*:*:*

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