How severe is CVE-2021-27513?

CVE-2021-27513 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-27513 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27513?

CVE-2021-27513 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27513?

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-2021-27513 published?

CVE-2021-27513 was published on 2021-02-22 and last updated on 2026-06-17.

CVE-2021-27513

CVE-2021-27513 is a high-severity vulnerability in Eyesofnetwork with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 28% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Eyesofnetwork
Published: 2021-02-22
Last modified: 2026-06-17

Description

The module admin_ITSM in EyesOfNetwork 5.3-10 allows remote authenticated users to upload arbitrary .xml.php files because it relies on "le filtre userside."

Frequently asked questions

What is CVE-2021-27513?: The module admin_ITSM in EyesOfNetwork 5.3-10 allows remote authenticated users to upload arbitrary .xml.php files because it relies on "le filtre userside."
How severe is CVE-2021-27513?: CVE-2021-27513 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-27513 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27513?: CVE-2021-27513 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27513?: 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-2021-27513 published?: CVE-2021-27513 was published on 2021-02-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eyesofnetwork:eyesofnetwork:5.3-10:*:*:*:*:*:*:*

More vulnerabilities in Eyesofnetwork

CVE-2022-41572 — Critical (CVSS 9.8): An issue was discovered in EyesOfNetwork (EON) through 5.3.11. Privilege escalation can be accomplished on the server…
CVE-2022-41571 — Critical (CVSS 9.8): An issue was discovered in EyesOfNetwork (EON) through 5.3.11. Local file inclusion can occur.
CVE-2022-41570 — Critical (CVSS 9.8): An issue was discovered in EyesOfNetwork (EON) through 5.3.11. Unauthenticated SQL injection can occur.
CVE-2021-40643 — Critical (CVSS 9.8): EyesOfNetwork before 07-07-2021 has a Remote Code Execution vulnerability on the mail options configuration page. In…
CVE-2021-27514 — Critical (CVSS 9.8): EyesOfNetwork 5.3-10 uses an integer of between 8 and 10 digits for the session ID, which might be leveraged for…
CVE-2020-27886 — Critical (CVSS 9.8): An issue was discovered in EyesOfNetwork eonweb 5.3-7 through 5.3-8. The eonweb web interface is prone to a SQL…

All CVEs affecting Eyesofnetwork →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

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