CVE-2017-7964

⛔ critical

Summary

Zyxel WRE6505 devices have a default TELNET password of 1234 for the root and admin accounts, which makes it easier for remote attackers to conduct DNS hijacking attacks by reconfiguring the built-in dnshijacker process.

CVSS Score

10.0

Critical

EPSS Score

2.7

Exploit Probability

Published Date

2017-04-19

First Seen: 2026-01-05

📊 Relative Risk Intelligence

This CVE is Extremely High Risk - more severe than 100.0% of all 365,890 vulnerabilities in our database.

Top 5% most severe

Severity Percentile

Last Modified 2026-05-13

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-1188

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
zyxel	wre6505_firmware	Affected	≤ v1.00\(aaqb.3\)c0

🔗 References 1

https://www.oxy-gen.mobi/blog.html

Exploit Patch Third Party Advisory

🔗 Related CVEs 3

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-7256	⚠️ high	8.8	1.2	UNSUPPORTED WHEN ASSIGNED A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware versio...	2026-05-12
CVE-2026-7257	🔶 medium	4.4	0.0	UNSUPPORTED WHEN ASSIGNED An insecure storage of sensitive information vulnerability in the configuration file of ...	2026-05-12
CVE-2026-6058	🔶 medium	4.5	0.2	UNSUPPORTED WHEN ASSIGNED An improper encoding or escaping vulnerability in the CGI program of Zyxel WRE6505 v2 fi...	2026-04-21

These CVEs affect the same products