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CVE-2009-0051

15
FAUCET Score

CVE-2009-0051 describes a vulnerability in ZXID 0.29 and earlier, where improper validation of the OpenSSL DSA_verify function's return value allows remote attackers to bypass certificate chain validation using a malformed SSL/TLS signature. This critical flaw, similar to CVE-2008-5077, carries a CVSS score of 5.0, indicating a network-exploitable vulnerability with low attack complexity that could lead to partial confidentiality impact. Despite its severity, there is no evidence of active exploitation, no known exploit code in Metasploit, Nuclei, or ExploitDB, and minimal community discussion or media coverage, suggesting it is not currently a high-profile threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.29CPE matchmatch criteria
cpe:2.3:a:zxid:zxid:*:*:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:zxid:zxid:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:zxid:zxid:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:zxid:zxid:0.3:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:zxid:zxid:0.4:*:*:*:*:*:*:*

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
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 42nd percentile among its peer group of 23,701 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

exchange.xforce.ibmcloud.com / vulnerabilities/47837
ocert.org / advisories/ocert-2008-016.html
securityfocus.com / archive/1/499827/100/0/threaded