How severe is CVE-2021-4257?

CVE-2021-4257 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-4257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4257?

CVE-2021-4257 affects Ctrlo Lenio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4257?

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

When was CVE-2021-4257 published?

CVE-2021-4257 was published on 2022-12-18 and last updated on 2026-06-17.

CVE-2021-4257

CVE-2021-4257 is a low-severity vulnerability in Ctrlo Lenio with a CVSS 3.x base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ctrlo Lenio
Published: 2022-12-18
Last modified: 2026-06-17

Description

A vulnerability was found in ctrlo lenio. It has been declared as problematic. This vulnerability affects unknown code of the file views/task.tt of the component Task Handler. The manipulation of the argument site.org.name/check.name/task.tasktype.name/task.name leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 698c5fa465169d6f23c6a41ca4b1fc9a7869013a. It is recommended to apply a patch to fix this issue. VDB-216214 is the identifier assigned to this vulnerability.

Frequently asked questions

What is CVE-2021-4257?: A vulnerability was found in ctrlo lenio. It has been declared as problematic. This vulnerability affects unknown code of the file views/task.tt of the component Task Handler. The manipulation of the argument site.org.name/check.name/task.tasktype.name/task.name leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 698c5fa465169d6f23c6a41ca4b1fc9a7869013a. It is recommended to apply a patch to fix this issue. VDB-216214 is the identifier assigned to this vulnerability.
How severe is CVE-2021-4257?: CVE-2021-4257 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-4257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4257?: CVE-2021-4257 affects Ctrlo Lenio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4257 published?: CVE-2021-4257 was published on 2022-12-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ctrlo:lenio:*:*:*:*:*:*:*:*

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