How severe is CVE-2021-42565?

CVE-2021-42565 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-42565 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42565?

CVE-2021-42565 affects Myfactory Fms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42565?

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

When was CVE-2021-42565 published?

CVE-2021-42565 was published on 2021-10-18 and last updated on 2026-06-17.

CVE-2021-42565

CVE-2021-42565 is a medium-severity vulnerability in Myfactory Fms with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Myfactory Fms
Published: 2021-10-18
Last modified: 2026-06-17

Description

myfactory.FMS before 7.1-912 allows XSS via the UID parameter.

Frequently asked questions

What is CVE-2021-42565?: myfactory.FMS before 7.1-912 allows XSS via the UID parameter.
How severe is CVE-2021-42565?: CVE-2021-42565 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-42565 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42565?: CVE-2021-42565 affects Myfactory Fms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42565?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42565 published?: CVE-2021-42565 was published on 2021-10-18 and last updated on 2026-06-17.

References

https://www.redteam-pentesting.de/advisories/rt-sa-2021-001

Affected products (1)

cpe:2.3:a:myfactory:fms:*:*:*:*:*:*:*:*

More vulnerabilities in Myfactory Fms

CVE-2021-42566 — Medium (CVSS 6.1): myfactory.FMS before 7.1-912 allows XSS via the Error parameter.

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