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CVE-2015-6418

14
FAUCET Score

CVE-2015-6418 describes a low-entropy random number generator in Cisco Small Business RV routers (4.x) and SA500 security appliances (2.2.07), making it easier for remote attackers to deduce TLS key pairs. This vulnerability has a CVSS score of 4.3 (Medium) with an attack vector over the network and medium complexity, potentially leading to information disclosure (C:P). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.2.07CPE matchmatch criteria
cpe:2.3:o:cisco:sa520:2.2.07:*:*:*:*:*:*:*
2.2.07CPE matchmatch criteria
cpe:2.3:o:cisco:sa520w:2.2.07:*:*:*:*:*:*:*
2.2.07CPE matchmatch criteria
cpe:2.3:o:cisco:sa540:2.2.07:*:*:*:*:*:*:*
4.0.0.7CPE matchmatch criteria
cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.0.7:*:*:*:*:*:*:*
4.0.2.8CPE matchmatch criteria
cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.2.8:*:*:*:*:*:*:*

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
1.84%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0184 is in the 57th percentile among its peer group of 19,955 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/content/CiscoSecurityAdvisory/cisco-sa-20151210-dwvr
Vendor Advisory
securityfocus.com / bid/78876
securitytracker.com / id/1034408
securitytracker.com / id/1034409