CVE-2005-1680: D-Link DSL-502T, DSL-504T, DSL-562T, and DSL-G604T, when /cgi-bin/firmwarecfg is executed, allows remote attac

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HIGH 7.5MITIGATEMITIGATEMITIGATE

CVE-2005-1680 is a high-severity flaw (CVSS 7.5) affecting dsl-502t, dsl-504t, dsl-562t. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

D-Link DSL-502T, DSL-504T, DSL-562T, and DSL-G604T, when /cgi-bin/firmwarecfg is executed, allows remote attackers to bypass authentication (1) if their IP address already exists in /var/tmp/fw_ip or (2) if their request is the first, which causes /var/tmp/fw_ip to be created and contain their IP address.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Published	2005-05-20
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

2005-05-20 04:00 UTCPublished CVE record published
2026-06-16 22:13 UTCUpdated Record last modified

d-link dsl-502t MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

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

d-link dsl-504t MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

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

d-link dsl-562t MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

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

d-link dsl-g604t MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

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

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-2005-1680?

dsl-502t: mitigate or apply the listed mitigation; dsl-504t: mitigate or apply the listed mitigation; dsl-562t: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-1680 being exploited?

CVE-2005-1680 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-2005-1680 affect?

CVE-2005-1680 affects dsl-502t, dsl-504t, dsl-562t. Severity is high (CVSS 7.5). D-Link DSL-502T, DSL-504T, DSL-562T, and DSL-G604T, when /cgi-bin/firmwarecfg is executed, allows remote attackers to bypass authentication (1) if their IP address already exists in /var/tmp/fw_ip or (2) if their request is the first, which

How urgent is CVE-2005-1680?

Priority 45/100. High severity

Software pages

D-Link vulnerabilities

References

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