AUGUST 4, 2026
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Case File

CVE-2021-3297

HIGH · CVSS 7.8 EPSS 20.51% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-26 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 20.5% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-3297
Severity
HIGH
CVSS
7.8
EPSS
20.51%

Original NVD Description

On Zyxel NBG2105 V1.00(AAGU.2)C0 devices, setting the login cookie to 1 provides administrator access.

Related CVEs

Other vulnerabilities affecting the same vendor(s)