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CVE-2019-6527

31
FAUCET Score

CVE-2019-6527 is a critical vulnerability affecting Kunbus PR100088 Modbus gateway versions prior to Release R02 (Software Version 1.1.13166). An unauthenticated attacker can change the password of an admin user if that user is currently or was previously logged in and the device has not been restarted. This vulnerability has a CVSS score of 9.8 (Critical) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 11 mentions and one media article, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< r02CPE matchmatch criteria
cpe:2.3:o:kunbus:pr100088_modbus_gateway_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 51st percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-19-036-05
MitigationThird Party AdvisoryUS Government Resource