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CVE-2009-1803

15
FAUCET Score

CVE-2009-1803 describes a username enumeration vulnerability affecting FreePBX versions 2.5.1, other 2.4.x, 2.5.x, and pre-release 2.6.x. This flaw allows remote attackers to determine valid usernames by observing differing error messages for failed login attempts. The vulnerability has a CVSS score of 5.0 (medium severity) with a low attack complexity, requiring no authentication, and primarily impacting confidentiality by disclosing usernames. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.4CPE matchmatch criteria
cpe:2.3:a:freepbx:freepbx:2.4:*:*:*:*:*:*:*
2.4.0_beta1CPE matchmatch criteria
cpe:2.3:a:freepbx:freepbx:2.4.0_beta1:*:*:*:*:*:*:*
2.4.0_beta2CPE matchmatch criteria
cpe:2.3:a:freepbx:freepbx:2.4.0_beta2:*:*:*:*:*:*:*
2.4.1CPE matchmatch criteria
cpe:2.3:a:freepbx:freepbx:2.4.1:*:*:*:*:*:*:*
2.5CPE matchmatch criteria
cpe:2.3:a:freepbx:freepbx:2.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
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
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 44th percentile among its peer group of 23,725 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

freepbx.org / trac/ticket/3660
secunia.com / advisories/34772
Vendor Advisory
osvdb.org / 54263
securityfocus.com / bid/34857
Patch