CVE-2008-4133: The web proxy service on the D-Link DIR-100 with firmware 1.12 and earlier does not properly filter web reques

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MEDIUM 4.3MITIGATE

CVE-2008-4133 is a medium-severity flaw (CVSS 4.3) affecting dir-100. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web proxy service on the D-Link DIR-100 with firmware 1.12 and earlier does not properly filter web requests with large URLs, which allows remote attackers to bypass web restriction filters.

Why this priority

EPSS top 9%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-20
Published	2008-09-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: d-link

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2008-09-19 17:15 UTCPublished CVE record published
2026-06-16 22:57 UTCUpdated Record last modified

d-link dir-100 MITIGATE

Affected: 1.02 · 1.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.02

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: D-Link DIR-100 1.12 - Security Bypass

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-4133?

dir-100: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2008-4133 being exploited?

CVE-2008-4133 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-4133 affect?

CVE-2008-4133 affects dir-100. Severity is medium (CVSS 4.3). The web proxy service on the D-Link DIR-100 with firmware 1.12 and earlier does not properly filter web requests with large URLs, which allows remote attackers to bypass web restriction filters.

How urgent is CVE-2008-4133?

Priority 43/100. EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2013-6027 HIGH 8.5 MITIGATE Stack-based buffer overflow in the RuntimeDiagnosticPing function in /bin/webs on D-Link DIR-100 routers might
CVE-2013-6026 HIGH 10.0 MITIGATE MITIGATE The web interface on D-Link DIR-100, DIR-120, DI-624S, DI-524UP, DI-604S, DI-604UP, DI-604+, and TM-G5240 rout

References

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