How severe is CVE-2021-26844?

CVE-2021-26844 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-26844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26844?

CVE-2021-26844 affects Poweradmin Pa Server Monitor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26844?

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

When was CVE-2021-26844 published?

CVE-2021-26844 was published on 2021-11-05 and last updated on 2026-06-17.

CVE-2021-26844

CVE-2021-26844 is a medium-severity vulnerability in Poweradmin Pa Server Monitor with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Poweradmin Pa Server Monitor
Published: 2021-11-05
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability in Power Admin PA Server Monitor 8.2.1.1 allows remote attackers to inject arbitrary web script or HTML via Console.exe.

Frequently asked questions

What is CVE-2021-26844?: A cross-site scripting (XSS) vulnerability in Power Admin PA Server Monitor 8.2.1.1 allows remote attackers to inject arbitrary web script or HTML via Console.exe.
How severe is CVE-2021-26844?: CVE-2021-26844 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-26844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26844?: CVE-2021-26844 affects Poweradmin Pa Server Monitor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26844 published?: CVE-2021-26844 was published on 2021-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:poweradmin:pa_server_monitor:8.2.1.1:*:*:*:*:*:*:*

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