CVE-2006-2559
Linksys WRT54G Wireless-G Broadband Router allows remote attackers to bypass access restrictions...
Linksys WRT54G Wireless-G Broadband 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.
Exploit likelihood
What each source reports
NVD Score used
Linksys WRT54G Wireless-G Broadband 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.
- Record
CVE-2006-2559- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
Linksys WRT54G Wireless-G Broadband 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.
- Record
CVE-2006-2559- Updated
- 2026-11-02
EUVDEUVD-2006-2559 No score
Linksys WRT54G Wireless-G Broadband 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.
- Record
EUVD-2006-2559- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jqwg-4qw8-r2cj No score
Linksys WRT54G Wireless-G Broadband Router allows remote attackers to bypass access restrictions...
Linksys WRT54G Wireless-G Broadband 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.
- Record
GHSA-jqwg-4qw8-r2cj- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2006-2559 is a high vulnerability (CVSS 7.5) in Linksys Wrt54g, published May 24, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.70%, the 77th percentile. No source names a fixed version.
References
exchange.xforce.ibmcloud.com/vulnerabilities/26707
secunia.com/advisories/20161
securitytracker.com/id?1016134
securityview.org/how-does-the-upnp-flaw-works.html
vupen.com/english/advisories/2006/1909
nvd.nist.gov/vuln/detail/CVE-2006-2559
github.com/advisories/GHSA-jqwg-4qw8-r2cj