How severe is CVE-2009-4821?

CVE-2009-4821 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-4821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4821?

CVE-2009-4821 affects Dlink Dir-615. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4821?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4821 published?

CVE-2009-4821 was published on 2010-04-27 and last updated on 2026-06-16.

CVE-2009-4821

CVE-2009-4821 is a medium-severity vulnerability in Dlink Dir-615 with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dlink Dir-615
Published: 2010-04-27
Last modified: 2026-06-16

Description

The D-Link DIR-615 with firmware 3.10NA does not require administrative authentication for apply.cgi, which allows remote attackers to (1) change the admin password via the admin_password parameter, (2) disable the security requirement for the Wi-Fi network via unspecified vectors, or (3) modify DNS settings via unspecified vectors.

Frequently asked questions

What is CVE-2009-4821?: The D-Link DIR-615 with firmware 3.10NA does not require administrative authentication for apply.cgi, which allows remote attackers to (1) change the admin password via the admin_password parameter, (2) disable the security requirement for the Wi-Fi network via unspecified vectors, or (3) modify DNS settings via unspecified vectors.
How severe is CVE-2009-4821?: CVE-2009-4821 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-4821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4821?: CVE-2009-4821 affects Dlink Dir-615. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4821?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4821 published?: CVE-2009-4821 was published on 2010-04-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:h:dlink:dir-615:3.10na:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-615

CVE-2017-11436 — Critical (CVSS 9.8): D-Link DIR-615 before v20.12PTb04 has a second admin account with a 0x1 BACKDOOR value, which might allow remote…
CVE-2017-7406 — Critical (CVSS 9.8): The D-Link DIR-615 device before v20.12PTb04 doesn't use SSL for any of the authenticated pages. Also, it doesn't allow…
CVE-2017-7405 — Critical (CVSS 9.8): On the D-Link DIR-615 before v20.12PTb04, once authenticated, this device identifies the user based on the IP address…
CVE-2017-7404 — High (CVSS 8.8): On the D-Link DIR-615 before v20.12PTb04, if a victim logged in to the Router's Web Interface visits a malicious site…

All CVEs affecting Dlink Dir-615 →

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