CVE-2016-3989

Exp

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 allows remote authenticated users to obtain root privileges for writing to unspecified scripts, and consequently obtain sensitive information or modify data, by leveraging access to the nobody account.

Published: 2016-07-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-3989 is rated High Exploit Risk (74.6/100): CVSS High severity, with high exploitation likelihood (EPSS 5.09%, 91th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-3989

EDB-ID Source Kind Published Link
40120 exploit_db edb 2016-07-17 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-3989

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 9.85% 5.09% -4.76%
2 2026-01-12 8.28% 9.85% +1.56%
3 2025-10-12 — 8.28% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-3989

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 5.2 [email protected]
8.5 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 9.2 [email protected]

Weakness enumeration for CVE-2016-3989

Affected software / configurations for CVE-2016-3989

Vendor Product Version Raw CPE
meinberg ntp_server_firmware <= 6.0 cpe:2.3:o:meinberg:ntp_server_firmware:*:*:*:*:*:*:*:*
meinberg ims-lantime_m1000 — cpe:2.3:h:meinberg:ims-lantime_m1000:-:*:*:*:*:*:*:*
meinberg ims-lantime_m3000 — cpe:2.3:h:meinberg:ims-lantime_m3000:-:*:*:*:*:*:*:*
meinberg ims-lantime_m500 — cpe:2.3:h:meinberg:ims-lantime_m500:-:*:*:*:*:*:*:*
meinberg lantime_m100 — cpe:2.3:h:meinberg:lantime_m100:-:*:*:*:*:*:*:*
meinberg lantime_m200 — cpe:2.3:h:meinberg:lantime_m200:-:*:*:*:*:*:*:*
meinberg lantime_m300 — cpe:2.3:h:meinberg:lantime_m300:-:*:*:*:*:*:*:*
meinberg lantime_m400 — cpe:2.3:h:meinberg:lantime_m400:-:*:*:*:*:*:*:*
meinberg lantime_m600 — cpe:2.3:h:meinberg:lantime_m600:-:*:*:*:*:*:*:*
meinberg lantime_m900 — cpe:2.3:h:meinberg:lantime_m900:-:*:*:*:*:*:*:*
meinberg lces — cpe:2.3:h:meinberg:lces:-:*:*:*:*:*:*:*
meinberg syncfire_1100 — cpe:2.3:h:meinberg:syncfire_1100:-:*:*:*:*:*:*:*

References for CVE-2016-3989

cvelogic Threat Intelligence