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CVE-2009-2765

83
FAUCET Score

CVE-2009-2765 describes a critical command injection vulnerability in the DD-WRT router firmware, specifically affecting versions before build 12533. Remote attackers can execute arbitrary commands by injecting shell metacharacters into requests made to cgi-bin/ URIs within the management GUI's httpd. This vulnerability carries a CVSS score of 8.3, indicating high severity due to its network-adjacent attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Exploit code is publicly available, including Metasploit modules and ExploitDB entries, and the vulnerability has garnered significant community discussion and media coverage, though it is not currently listed on CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 24CPE matchmatch criteria
cpe:2.3:a:dd-wrt:dd-wrt:*:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
82.50%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: DD-WRT HTTP Daemon Arbitrary Command Execution · Jul 20, 2009
ExploitDB: EDB-16856 · Jul 7, 2010
This CVE's current EPSS score of 0.8250 is in the 99th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

isc.sans.org / diary.html
Patch
metasploit.com / svn/framework3/trunk/modules/exploits/linux/http/ddwrt_cgibin_exec.rb
Exploit
securitytracker.com / id
dd-wrt.com
PatchVendor Advisory
dd-wrt.com / phpBB2/viewtopic.php
Exploit
exploit-db.com / exploits/9209
osvdb.org / 55990
securityfocus.com / bid/35742
Exploit
theregister.co.uk / 2009/07/21/critical_ddwrt_router_vuln