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CVE-2009-3369

26
FAUCET Score

CVE-2009-3369 describes a critical vulnerability in BackupPC 3.1.0, specifically within the CgiUserConfigEdit component. In multi-user environments utilizing SSH keys and Rsync, authenticated users can manipulate the ClientNameAlias function to impersonate other systems, enabling them to read and write sensitive files by initiating backup or restore operations. This vulnerability carries a high CVSS score of 8.5, indicating a network-based attack with medium complexity, leading to complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the high FAUCET Risk Score of 74/100 suggests a notable potential for impact.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.0CPE matchmatch criteria
cpe:2.3:a:backuppc:backuppc:3.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.5HIGH

AV:N/AC:M/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0294 is in the 83rd percentile among its peer group of 1,162 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-3369Low

BackupPC: Permission bypass via ClientNameAlias by using rsync data backup method

Aug 18, 2009

References

bugs.debian.org / cgi-bin/bugreport.cgi
osvdb.org / 57236
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/36393
Vendor Advisory
secunia.com / advisories/37161
redhat.com / archives/fedora-package-announce/2009-October/msg00694.html
redhat.com / archives/fedora-package-announce/2009-October/msg00729.html