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CVE-2015-3960

14
FAUCET Score

CVE-2015-3960 describes a critical vulnerability in Belden GarrettCom Magnum 6K and 10K switches, where firmware versions prior to 4.5.6 utilize hardcoded RSA private keys and certificates. This flaw allows remote attackers to compromise HTTPS session security by exploiting known private keys from other installations. The vulnerability has a CVSS score of 4.3, indicating a medium severity with network-based attacks and medium complexity, potentially leading to information disclosure. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered some community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.5.5CPE matchmatch criteria
cpe:2.3:o:garrettcom:magnum_10k_firmware:*:*:*:*:*:*:*:*
<= 4.5.5CPE matchmatch criteria
cpe:2.3:o:garrettcom:magnum_6k_firmware:*:*:*:*:*:*:*:*

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
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 13th percentile among its peer group of 19,954 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

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

ics-cert.us-cert.gov / advisories/ICSA-15-167-01
Third Party AdvisoryUS Government Resource
garrettcom.com / techsupport/MNS6K_R456_Release_Notes.pdf
Vendor Advisory
securityfocus.com / bid/75236