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CVE-2009-0545

91
FAUCET Score

CVE-2009-0545 describes a critical remote code execution vulnerability in ZeroShell 1.0beta11 and earlier. Attackers can exploit a flaw in the cgi-bin/kerbynet script by injecting shell metacharacters into the 'type' parameter during a NoAuthREQ x509List action. This vulnerability carries a CVSS score of 10.0, indicating maximum severity with network-based exploitation requiring low complexity and leading to complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV list, exploit intelligence confirms the availability of Metasploit modules, Nuclei templates, and ExploitDB entries, demonstrating readily available exploit code and a high EPSS score, despite a lack of public community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:zeroshell:zeroshell:1.0:beta1:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:zeroshell:zeroshell:1.0:beta10:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:zeroshell:zeroshell:1.0:beta11:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:zeroshell:zeroshell:1.0:beta2:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:zeroshell:zeroshell:1.0:beta3:*:*:*:*:*:*

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
90.39%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: ZeroShell Remote Code Execution · Sep 22, 2013
Nuclei: CVE-2009-0545 · May 19, 2021
ExploitDB: EDB-8023 · Feb 9, 2009
This CVE's current EPSS score of 0.9039 is in the 100th 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

exploit-db.com / exploits/8023
ikkisoft.com / stuff/LC-2009-01.txt
Exploit
securityfocus.com / archive/1/500763/100/0/threaded
vupen.com / english/advisories/2009/0385
zeroshell.net / eng/announcements
PatchVendor Advisory
zeroshell.net / eng/patch-details
Patch