High severity · published Mar 15, 2021
CVE-2021-25676
A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3)
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RR
Ruggedcom Rm1224 Firmware · Siemens
6.3 · source: NVD
SM
Scalance M-800 Firmware · Siemens
6.3 · source: NVD
SS
Scalance S615 Firmware · Siemens
6.3 · source: NVD
SS
Scalance Sc-600 Firmware · Siemens
2.1 before 2.1.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25676
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25676
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf
Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02
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