How severe is CVE-2021-27514?

CVE-2021-27514 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-27514 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27514?

CVE-2021-27514 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27514?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-27514 published?

CVE-2021-27514 was published on 2021-02-22 and last updated on 2026-06-17.

CVE-2021-27514

CVE-2021-27514 is a critical-severity vulnerability in Eyesofnetwork with a CVSS 3.x base score of 9.8. 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-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Eyesofnetwork
Published: 2021-02-22
Last modified: 2026-06-17

Description

EyesOfNetwork 5.3-10 uses an integer of between 8 and 10 digits for the session ID, which might be leveraged for brute-force authentication bypass (such as in CVE-2021-27513 exploitation).

Frequently asked questions

What is CVE-2021-27514?: EyesOfNetwork 5.3-10 uses an integer of between 8 and 10 digits for the session ID, which might be leveraged for brute-force authentication bypass (such as in CVE-2021-27513 exploitation).
How severe is CVE-2021-27514?: CVE-2021-27514 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-27514 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27514?: CVE-2021-27514 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27514?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-27514 published?: CVE-2021-27514 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-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…
CVE-2020-9465 — Critical (CVSS 9.8): An issue was discovered in EyesOfNetwork eonweb 5.1 through 5.3 before 5.3-3. The eonweb web interface is prone to a…

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