CVE-2006-2560 — Sitecom WL-153 router firmware before 1.38 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

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HIGH

Sitecom WL-153 router firmware before 1.38 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

Published May 24, 2006

7.5

HIGH

CVSS 2.0

EPSS 1.55%

Description

Sitecom WL-153 router firmware before 1.38 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

Remediation

No remediation recorded yet.

Metrics

1.55% 0.01548

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01548

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.55% (0.01548)	74.16th	v5 (v2026.06.15)
Jun 15, 2026	1.52% (0.01519)	71.19th	v5 (v2026.06.15)
Mar 17, 2025	0.35% (0.00349)	55.17th	v4 (v2025.03.14)
Dec 12, 2024	0.76% (0.00755)	81.73th	v3 (v2023.03.01)
Feb 15, 2024	1.07% (0.01068)	83.76th	v3 (v2023.03.01)
Oct 16, 2023	1.03% (0.01029)	82.15th	v3 (v2023.03.01)
Mar 27, 2023	0.97% (0.00965)	80.99th	v3 (v2023.03.01)
Mar 7, 2023	0.88% (0.00878)	79.99th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-264

References (4)

http://secunia.com/advisories/20183
third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityview.org/dutch-student-finds-a-bug-in-upnp.html
x_refsource_MISCURL Repurposed
http://www.securityview.org/how-does-the-upnp-flaw-works.html
x_refsource_MISCURL Repurposed
http://www.vupen.com/english/advisories/2006/1912
vdb-entryx_refsource_VUPEN

Link	Providers	Tags
http://secunia.com/advisories/20183		third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityview.org/dutch-student-finds-a-bug-in-upnp.html		x_refsource_MISCURL Repurposed
http://www.securityview.org/how-does-the-upnp-flaw-works.html		x_refsource_MISCURL Repurposed
http://www.vupen.com/english/advisories/2006/1912		vdb-entryx_refsource_VUPEN

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published May 24, 2006

Updated Aug 7, 2024

Reserved May 23, 2006

Link CVE-2006-2560

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2006-2560

Red Hat

Severity n/a

Public date n/a

Links CVE-2006-2560