High severity · published Feb 27, 2026
CVE-2026-1627
An attacker may exploit the use of outdated and weak MAC algorithms in the device’s SSH service to potentially compromise the integrity of the SSH session, allowing manipulation…
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
An attacker may exploit the use of outdated and weak MAC algorithms in the device’s SSH service to potentially compromise the integrity of the SSH session, allowing manipulation of transmitted data if the attacker can interact with the network traffic.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LF
Lms1000 Firmware · Sick
before 2.4.1 · source: NVD
MF
Mrs1000 Firmware · Sick
before 2.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1627
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1627
Vendor Advisory
https://sick.com/psirt
US Government Resource
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
Not Applicable
https://www.first.org/cvss/calculator/3.1
Vendor Advisory
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0005.json
Vendor Advisory
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0005.pdf
Vendor Advisory
https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
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9.1
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An attacker may exploit the use of weak CBC-based cipher suites in the device’s SSH service to potentially observe or manipulate parts of the encrypted SSH communication, if they…