CVE-2016-2333: SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware before 01A.8 use the same hardc

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HIGH 7.5REMOTEMITIGATE

CVE-2016-2333 is a high-severity flaw (CVSS 7.5) affecting syslink sl-1000 modular gateway firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware before 01A.8 use the same hardcoded encryption key across different customers' installations, which allows attackers to defeat cryptographic protection mechanisms by leveraging knowledge of this key from another installation.

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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-310
Published	2016-04-25
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: systech

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

Am I affected?

Timeline

2016-04-25 18:59 UTCPublished CVE record published
2026-06-17 00:43 UTCUpdated Record last modified

systech syslink sl-1000 modular gateway 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-2016-2333?

syslink sl-1000 modular gateway firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-2333 being exploited?

CVE-2016-2333 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-2016-2333 affect?

CVE-2016-2333 affects syslink sl-1000 modular gateway firmware. Severity is high (CVSS 7.5). SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware before 01A.8 use the same hardcoded encryption key across different customers' installations, which allows attackers to defeat cryptographic protection mechanism

How urgent is CVE-2016-2333?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-2332 HIGH 8.8 MITIGATE flu.cgi in the web interface on SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware
CVE-2016-2331 CRITICAL 9.8 MITIGATE The web interface on SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware before 01A

References

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