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CVE-2015-7923

26
FAUCET Score

CVE-2015-7923 describes a critical vulnerability in Westermo WeOS versions prior to 4.19.0, where all installations share the same SSL private key. This flaw allows man-in-the-middle attackers to easily compromise cryptographic protections. With a CVSS score of 9.0 (CRITICAL), this vulnerability has a network attack vector, high impact on confidentiality, integrity, and availability, but requires high attack complexity. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit, Nuclei, or ExploitDB, it has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
4.18.0CPE matchmatch criteria
cpe:2.3:o:westermo:weos:4.18.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 57th percentile among its peer group of 200 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.4 Reddit, 1.1 Bluesky, 0.8 Mastodon, and 2.3 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.8 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-16-028-01
Third Party AdvisoryUS Government Resource