How severe is CVE-2021-4304?

CVE-2021-4304 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-4304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4304?

CVE-2021-4304 affects Ulcc-core Project Ulcc-core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4304?

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

When was CVE-2021-4304 published?

CVE-2021-4304 was published on 2023-01-05 and last updated on 2026-06-17.

CVE-2021-4304

CVE-2021-4304 is a medium-severity vulnerability in Ulcc-core Project Ulcc-core with a CVSS 3.x base score of 6.3. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Ulcc-core Project Ulcc-core
Published: 2023-01-05
Last modified: 2026-06-17

Description

A vulnerability was found in eprintsug ulcc-core. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file cgi/toolbox/toolbox. The manipulation of the argument password leads to command injection. The attack can be launched remotely. The patch is named 811edaae81eb044891594f00062a828f51b22cb1. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-217447.

Frequently asked questions

What is CVE-2021-4304?: A vulnerability was found in eprintsug ulcc-core. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file cgi/toolbox/toolbox. The manipulation of the argument password leads to command injection. The attack can be launched remotely. The patch is named 811edaae81eb044891594f00062a828f51b22cb1. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-217447.
How severe is CVE-2021-4304?: CVE-2021-4304 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-4304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4304?: CVE-2021-4304 affects Ulcc-core Project Ulcc-core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4304 published?: CVE-2021-4304 was published on 2023-01-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ulcc-core_project:ulcc-core:*:*:*:*:*:*:*:*

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