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CVE-2015-5372

15
FAUCET Score

CVE-2015-5372 describes an authentication bypass vulnerability in AdNovum nevisAuth versions 4.13.0.0 through 4.18.3.0 when using SAML POST-Binding. The flaw allows remote attackers to inject arbitrary SAML assertions by presenting a crafted X.509 certificate, as the system fails to fully validate the embedded certificate against the Identity Provider's certificate. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and no authentication required, potentially leading to unauthorized access (integrity impact). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.18.3.0CPE matchmatch criteria
cpe:2.3:a:adnovum:nevisauth:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
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
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 34th percentile among its peer group of 23,723 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

blog.csnc.ch / 2015/09/saml-sp-authentication-bypass-vulnerability-in-nevisauth
packetstormsecurity.com / files/133628/nevisAuth-Authentication-Bypass.html
seclists.org / fulldisclosure/2015/Sep/87
csnc.ch / misc/files/advisories/CVE-2015-5372_AdNovum_nevisAuth_Authentication_Bypass.txt
securityfocus.com / archive/1/536508/100/0/threaded