How severe is CVE-2020-8657?

CVE-2020-8657 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-2020-8657 being actively exploited?

Yes. CVE-2020-8657 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2020-8657?

CVE-2020-8657 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2020-8657 have an EU (EUVD) identifier?

Yes. CVE-2020-8657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-29505. It is also flagged as exploited in the EUVD (since 2021-11-03).

When was CVE-2020-8657 published?

CVE-2020-8657 was published on 2020-02-06 and last updated on 2026-06-17.

CVE-2020-8657

CVE-2020-8657 is a critical-severity vulnerability in Eyesofnetwork with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03). The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 92% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
EU (EUVD) id: EUVD-2020-29505
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
Weakness: CWE-798
Affected product: Eyesofnetwork
Published: 2020-02-06
Last modified: 2026-06-17

Description

An issue was discovered in EyesOfNetwork 5.3. The installation uses the same API key (hardcoded as EONAPI_KEY in include/api_functions.php for API version 2.4.2) by default for all installations, hence allowing an attacker to calculate/guess the admin access token.

Frequently asked questions

What is CVE-2020-8657?: An issue was discovered in EyesOfNetwork 5.3. The installation uses the same API key (hardcoded as EONAPI_KEY in include/api_functions.php for API version 2.4.2) by default for all installations, hence allowing an attacker to calculate/guess the admin access token.
How severe is CVE-2020-8657?: CVE-2020-8657 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-2020-8657 being actively exploited?: Yes. CVE-2020-8657 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2020-8657?: CVE-2020-8657 affects Eyesofnetwork. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2020-8657 have an EU (EUVD) identifier?: Yes. CVE-2020-8657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-29505. It is also flagged as exploited in the EUVD (since 2021-11-03).
When was CVE-2020-8657 published?: CVE-2020-8657 was published on 2020-02-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eyesofnetwork:eyesofnetwork:5.3-0:*:*:*:*:*:*:*

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…
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