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CVE-2018-25029

26
FAUCET Score

CVE-2018-25029 describes a vulnerability in the Z-Wave specification that allows an attacker within radio range during device pairing to downgrade S2 security to S0 or other less secure protocols. This downgrade then enables exploitation of CVE-2013-20003 to intercept and spoof traffic, affecting various Silicon Labs Z-Wave modules and firmware. With a CVSS score of 8.1 (HIGH), this vulnerability has a low attack complexity and can lead to high confidentiality and integrity impacts. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
s2CPE matchmatch criteria
cpe:2.3:o:silabs:zgm130s037hgn_firmware:s2:*:*:*:*:*:*:*
s2CPE matchmatch criteria
cpe:2.3:o:silabs:zm5202_firmware:s2:*:*:*:*:*:*:*
s2CPE matchmatch criteria
cpe:2.3:o:silabs:zm5101_firmware:s2:*:*:*:*:*:*:*
s2CPE matchmatch criteria
cpe:2.3:o:silabs:zgm2305a27hgn_firmware:s2:*:*:*:*:*:*:*
s2CPE matchmatch criteria
cpe:2.3:o:silabs:zgm230sb27hgn_firmware:s2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
46.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 48th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

community.silabs.com / s/share/a5U1M000000knqNUAQ/updated-your-zwave-smart-locks-are-safe-and-secure
Third Party Advisory
pentestpartners.com / security-blog/z-shave-exploiting-z-wave-downgrade-attacks
ExploitThird Party Advisory