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CVE-2015-7973

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

Published: Jan 30, 2017Updated: May 13, 2026 Sources: CVE List NVD csafCWE-254
6.5MEDIUM
NVD MITRE
EPSS Score
3.3%
Top 12.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

TIM 4R-IE devices contain multiple vulnerabilities in the integrated NTP component as listed below. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:LA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-254

Affected Products

siemens
commercial·DEaka siemens ag
tim 4r-ie firmware
ICS / OT / IoT
tim 4r-ie dnp3 firmware
ICS / OT / IoT
netapp
commercial·US
clustered data ontap
Hardware Firmware
oncommand balance
Hardware Firmware
ntp
oss-projectaka ntp daemon
ntpOn-prem
Networking Infrastructure / dns-dhcp-ntp
freebsd
oss-project·US
freebsdOn-premOS
Operating Systems / unix-bsd
canonical
commercial·GBaka canonical ltd.
ubuntu linuxOn-premOS
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2015-7973?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://cert-portal.siemens.com/productcert/csaf/ssa-497656.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-497656.html
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-103-11.json
raw.githubusercontent.com
and 29 more references View all →
News mentions
Could not load news mentions.

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