CVE-2016-3988: Multiple stack-based buffer overflows in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANT

Q: How do I fix CVE-2016-3988?

ntp server firmware: upgrade to newer than 6.0; ims-lantime m1000: mitigate or apply the listed mitigation; ims-lantime m3000: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2016-3988 being exploited?

CVE-2016-3988 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-3988 affect?

CVE-2016-3988 affects ntp server firmware, ims-lantime m1000, ims-lantime m3000. Severity is high (CVSS 7.3). Multiple stack-based buffer overflows in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, an

Q: How urgent is CVE-2016-3988?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.3REMOTEUPGRADEMITIGATEMITIGATE

CVE-2016-3988 is a high-severity flaw (CVSS 7.3) affecting ntp server firmware, ims-lantime m1000, ims-lantime m3000. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, and LCES devices with firmware before 6.20.004 allow remote attackers to obtain sensitive information, modify data, or cause a denial of service via a crafted parameter in a POST request.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-119
Published	2016-07-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: meinberg

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

Am I affected?

Timeline

2016-07-03 14:59 UTCPublished CVE record published
2026-06-17 00:46 UTCUpdated Record last modified

meinberg ntp server firmware UPGRADE

Affected: <= 6.0

Fixed in: newer than 6.0

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.

meinberg ims-lantime m1000 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

meinberg ims-lantime m3000 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

meinberg ims-lantime m500 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

meinberg lantime m100 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

meinberg lantime m200 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

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-2016-3988?

ntp server firmware: upgrade to newer than 6.0; ims-lantime m1000: mitigate or apply the listed mitigation; ims-lantime m3000: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-3988 being exploited?

CVE-2016-3988 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-2016-3988 affect?

CVE-2016-3988 affects ntp server firmware, ims-lantime m1000, ims-lantime m3000. Severity is high (CVSS 7.3). Multiple stack-based buffer overflows in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, an

How urgent is CVE-2016-3988?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-3989 HIGH 8.1 UPGRADE MITIGATE The NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900
CVE-2016-3962 HIGH 7.3 UPGRADE MITIGATE Stack-based buffer overflow in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000,
CVE-2014-5417 HIGH 7.5 MITIGATE UPGRADE Cross-site scripting (XSS) vulnerability in Meinberg NTP Server firmware on LANTIME M-Series devices 6.15.019

References

← Back to latest CVEs