Critical 9.8Known exploited (CISA KEV)Published Feb 6, 2020

CVE-2020-8657An issue was discovered in EyesOfNetwork 5.3.

Updated under an hour ago (2026-10-19 09:30 UTC)

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It affects eyesofnetwork. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022. Treat that date as your deadline.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-798
Known exploited: Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 91.87% (percentile 100)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

eyesofnetwork eyesofnetwork eyesofnetwork:eyesofnetwork	5.3-0	NVD

References

https://github.com/EyesOfNetworkCommunity/eonapi/issues/17x-refsource-misc, third-party-advisory
http://packetstormsecurity.com/files/156605/EyesOfNetwork-AutoDiscovery-Target-Command-Execution.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8657us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.