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CVE-2007-2233

27
FAUCET Score

CVE-2007-2233 describes an authentication bypass vulnerability in cosign-bin/cosign.cgi affecting Cosign versions 2.0.2 and earlier. Remote authenticated users can exploit this by injecting CR sequences into the service parameter, allowing them to perform unauthorized actions as arbitrary users via injected LOGIN and REGISTER commands. With a CVSS score of 6.5, this vulnerability has a low attack complexity and can lead to partial compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, public exploit code exists on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
0.7.0CPE matchmatch criteria
cpe:2.3:a:cosign:cosign:0.7.0:*:*:*:*:*:*:*
0.8.0CPE matchmatch criteria
cpe:2.3:a:cosign:cosign:0.8.0:*:*:*:*:*:*:*
0.9.0CPE matchmatch criteria
cpe:2.3:a:cosign:cosign:0.9.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:cosign:cosign:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:cosign:cosign:1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.5MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.99%
Probability of exploitation in next 30 days
EPSS Percentile
78.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-29844 · Apr 11, 2007
This CVE's current EPSS score of 0.0199 is in the 91st percentile among its peer group of 21,954 CVEs.

Social Chatter

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

secunia.com / advisories/24845
PatchVendor Advisory
securityfocus.com / archive/1/465386/100/100/threaded
umich.edu / ~umweb/software/cosign/cosign-vuln-2007-002.txt
Vendor Advisory
vupen.com / english/advisories/2007/1359