How severe is CVE-2021-42671?

CVE-2021-42671 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-42671 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42671?

CVE-2021-42671 affects Engineers Online Portal Project Engineers Online Portal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42671?

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-2021-42671 published?

CVE-2021-42671 was published on 2021-11-05 and last updated on 2026-06-17.

CVE-2021-42671

CVE-2021-42671 is a high-severity vulnerability in Engineers Online Portal Project Engineers Online Portal with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-425.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-425
Affected product: Engineers Online Portal Project Engineers Online Portal
Published: 2021-11-05
Last modified: 2026-06-17

Description

An incorrect access control vulnerability exists in Sourcecodester Engineers Online Portal in PHP in nia_munoz_monitoring_system/admin/uploads. An attacker can leverage this vulnerability in order to bypass access controls and access all the files uploaded to the web server without the need of authentication or authorization.

Frequently asked questions

What is CVE-2021-42671?: An incorrect access control vulnerability exists in Sourcecodester Engineers Online Portal in PHP in nia_munoz_monitoring_system/admin/uploads. An attacker can leverage this vulnerability in order to bypass access controls and access all the files uploaded to the web server without the need of authentication or authorization.
How severe is CVE-2021-42671?: CVE-2021-42671 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-42671 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42671?: CVE-2021-42671 affects Engineers Online Portal Project Engineers Online Portal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42671?: 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-2021-42671 published?: CVE-2021-42671 was published on 2021-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:engineers_online_portal_project:engineers_online_portal:-:*:*:*:*:*:*:*

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