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CVE-2015-4259

14
FAUCET Score

CVE-2015-4259 describes a vulnerability in the Integrated Management Controller (IMC) of Cisco Unified Computing System (UCS) C servers running specific software versions (1.5(3) and 1.6(0.16)). The vulnerability stems from the use of a default SSL certificate, which allows man-in-the-middle (MitM) attackers to bypass cryptographic protections by exploiting knowledge of the associated private key. This vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack vector with medium complexity and potential for partial confidentiality impact, but no integrity or availability impact. Its EPSS score is very low, suggesting a minimal likelihood of exploitation in the wild. Currently, there is no evidence of active exploitation, nor is exploit code available in common repositories like Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are also negligible, further indicating a low level of attention and perceived threat.

Impacted Technologies

VendorProductVersion(s)CPE
1.5\(3\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:1.5\(3\):*:*:*:*:*:*:*
1.6\(0.16\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:1.6\(0.16\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0077 is in the 11th percentile among its peer group of 19,956 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/viewAlert.x
Vendor Advisory
securitytracker.com / id/1032872
Third Party AdvisoryVDB Entry