CVE-2015-7850

mediumpriority · track · 28EPSS 0.056 · 93 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.60% (93rd) EPSS

CVSS 4 · medium

Is it mine?

14 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · auma_psirt · nvd

EPSS · scored 2026-10-23

ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (infinite loop or crash) by pointing the key file at the log file.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedSIMA² Master Stationauma_psirt
Upgrade your SIMA2 to software version 2.6 or above. The NTP service of the SIMA2 Master Station with software version V2.6 and above includes a current, supported version of ntpd.
MitigationSIMA² Master Stationauma_psirt
1. If your SIMA2 does not need to provide time information to other systems or synchronize itself with an NTP server, disable the NTP client on those systems. Please note that the NTP client is disabled by default in SIMA2 2. In case you must use the NTP server on an SIMA2, choose from the following options to reduce NTP-based risks: - Allow NTP traffic to/from trusted NTP clients only - Monitor the network for malicious NTP traffic going to/coming from the SIMA2 - Filter malicious NTP traffic going to/coming from the SIMA2 Monitor NTP server operations on your SIMA2 (server availability, correctness of advertised time, NTP-related log entries, etc.) 3. In case you must use the NTP client on an SIMA2, choose from the following options to reduce NTP-based risks: - Use trusted NTP servers only - Allow NTP traffic to/from trusted NTP servers only - Monitor the network for malicious NTP traffic targeting the SIMA2 - Filter malicious NTP traffic targeting the SIMA2 - Monitor NTP client operations on your SIMA2 (correctness of system time, NTP-related log entries, etc.)

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · AUMA PSIRT

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-835USprimaryCWE-835US

affected products (14)

Products and version ranges known to be affected.

AUMA SIMA² Master Stationall versionsfixedauma_psirtDE
AUMA SIMA² Master Station< V2.6auma_psirtDE
n/a n/a≤ n/aenisa_euvdEU
debian debian linux= 7.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
netapp clustered data ontapall versionsnvdUScpe:2.3:o:netapp:clustered_data_ontap:*:*:*:*:*:*:*:*
netapp data ontapall versionsnvdUScpe:2.3:o:netapp:data_ontap:*:*:*:*:*:*:*:*
netapp oncommand balanceall versionsnvdUScpe:2.3:a:netapp:oncommand_balance:*:*:*:*:*:*:*:*
netapp oncommand performance managerall versionsnvdUScpe:2.3:a:netapp:oncommand_performance_manager:*:*:*:*:*:*:*:*
netapp oncommand unified managerall versionsnvdUScpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:*:*:*
ntp ntp4.2.0 → 4.2.8nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
ntp ntp= 4.2.8nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
ntp ntp4.3.0 → 4.3.77nvdUScpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

VDE-2022-032AUMA: Multiple Vulnerabilities in Automation Runtime NTP Service2022-08-09csaf · auma_psirtDE
The SIMA2 Master Station features an NTP service based on ntpd, a reference implementation of the Network Time Protocol (NTP). Affected SIMA2 Master Stations with software version < V2.6 include an outdated version of ntpd which is affected by a large number of vulnerabilities

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd auma_psirt nvd NVD CVE.org MITRE

published 2017-08-07modified 2026-06-17

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+1365 more

references (21)

External citations — patches, advisories, analysis.

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