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CVE-2009-4509

30
FAUCET Score

CVE-2009-4509 describes a critical vulnerability in the administrative web console of TANDBERG Video Communication Server (VCS) versions prior to X4.3. The flaw stems from the use of predictable session cookies, specifically in secure.php scripts, enabling remote attackers to bypass authentication. This allows for arbitrary code execution by loading a custom software update. The vulnerability carries a CVSS score of 10.0, indicating maximum severity with a network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Its FAUCET Risk Score is 84/100. Despite its high severity, there is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. The CVE also lacks significant community discussion or media coverage, suggesting it has not garnered widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= x4.2.1CPE matchmatch criteria
cpe:2.3:a:vsecurity:tandberg_video_communication_server:*:*:*:*:*:*:*:*
x1.0.0CPE matchmatch criteria
cpe:2.3:a:vsecurity:tandberg_video_communication_server:x1.0.0:*:*:*:*:*:*:*
x1.1.0CPE matchmatch criteria
cpe:2.3:a:vsecurity:tandberg_video_communication_server:x1.1.0:*:*:*:*:*:*:*
x1.2.0CPE matchmatch criteria
cpe:2.3:a:vsecurity:tandberg_video_communication_server:x1.2.0:*:*:*:*:*:*:*
x2.0.0CPE matchmatch criteria
cpe:2.3:a:vsecurity:tandberg_video_communication_server:x2.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
4.53%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0453 is in the 83rd percentile among its peer group of 51,485 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

ftp.tandberg.com / pub/software/vcs/TANDBERG%20Video%20Communication%20Server%20Software%20Release%20Notes%20%28X4%29.pdf
secunia.com / advisories/39275
Vendor Advisory
securityfocus.com / archive/1/510672/100/0/threaded
vsecurity.com / resources/advisory/20100409-1
PatchVendor Advisory