CVE-2015-7931: The Java client in Adcon Telemetry A840 Telemetry Gateway Base Station does not authenticate the station devic

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HIGH 8.7REMOTEMITIGATE

CVE-2015-7931 is a high-severity flaw (CVSS 8.7) affecting a840 telemetry gateway base station firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Java client in Adcon Telemetry A840 Telemetry Gateway Base Station does not authenticate the station device, which allows man-in-the-middle attackers to spoof devices and obtain sensitive information by reading cleartext packet data, related to the lack of SSL support.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-20, CWE-200
Published	2015-12-24
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: adcon

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-12-24 01:59 UTCPublished CVE record published
2026-06-17 00:33 UTCUpdated Record last modified

adcon a840 telemetry gateway base station firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-7931?

a840 telemetry gateway base station firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-7931 being exploited?

CVE-2015-7931 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-7931 affect?

CVE-2015-7931 affects a840 telemetry gateway base station firmware. Severity is high (CVSS 8.7). The Java client in Adcon Telemetry A840 Telemetry Gateway Base Station does not authenticate the station device, which allows man-in-the-middle attackers to spoof devices and obtain sensitive information by reading cleartext packet data, re

How urgent is CVE-2015-7931?

Priority 53/100. High severity; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

Related CVEs

CVE-2015-7934 HIGH 8.6 MITIGATE The Java client in Adcon Telemetry A840 Telemetry Gateway Base Station allows remote attackers to discover log
CVE-2015-7932 HIGH 8.6 MITIGATE Adcon Telemetry A840 Telemetry Gateway Base Station allows remote attackers to obtain sensitive information by
CVE-2015-7930 CRITICAL 10.0 MITIGATE Adcon Telemetry A840 Telemetry Gateway Base Station has hardcoded credentials, which allows remote attackers t

References

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