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CVE-2009-4821

15
FAUCET Score

CVE-2009-4821 describes an authentication bypass vulnerability in the D-Link DIR-615 router with firmware 3.10NA. This flaw allows unauthenticated remote attackers to modify critical device settings, including changing the administrator password, disabling Wi-Fi security, or altering DNS configurations through the apply.cgi script. With a CVSS score of 5.0, this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to unauthorized information modification. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the vulnerability remains a potential risk for unpatched devices.

Impacted Technologies

VendorProductVersion(s)CPE
3.10naCPE matchmatch criteria
cpe:2.3:h:dlink:dir-615:3.10na:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 48th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/37777
Vendor Advisory
hiredhacker.com / 2009/12/15/d-link-dir-615-remote-exploit
Exploit
securityfocus.com / bid/37415