What’s Vulnerable › Vulnerabilities

CVE-2006-2562

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-05-24 · updated 2026-06-16
• Weakness: CWE-264

Description

ZyXEL P-335WT router allows remote attackers to bypass access restrictions and conduct unauthorized operations via a UPnP request with a modified InternalClient parameter, which is not validated, as demonstrated by using AddPortMapping to forward arbitrary traffic.

Affected products

• Zyxel P-335Wt Router: all versions

References

• http://secunia.com/advisories/20184
• http://www.securityview.org/dutch-student-finds-a-bug-in-upnp.html
• http://www.securityview.org/how-does-the-upnp-flaw-works.html
• http://www.vupen.com/english/advisories/2006/1910
• https://exchange.xforce.ibmcloud.com/vulnerabilities/26710
• http://secunia.com/advisories/20184
• http://www.securityview.org/dutch-student-finds-a-bug-in-upnp.html
• http://www.securityview.org/how-does-the-upnp-flaw-works.html
• http://www.vupen.com/english/advisories/2006/1910
• https://exchange.xforce.ibmcloud.com/vulnerabilities/26710

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