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Fencer Vulns
medium 6.7

CVE-2021-37209 json

A vulnerability has been identified in RUGGEDCOM i800 (All versions < V4.3.8), RUGGEDCOM i801 (All versions < V4.3.8), RUGGEDCOM i802 (All…

published 2022-03-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23783

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

A vulnerability has been identified in RUGGEDCOM i800 (All versions < V4.3.8), RUGGEDCOM i801 (All versions < V4.3.8), RUGGEDCOM i802 (All versions < V4.3.8), RUGGEDCOM i803 (All versions < V4.3.8), RUGGEDCOM M2100 (All versions < V4.3.8), RUGGEDCOM M2200 (All versions < V4.3.8), RUGGEDCOM M969 (All versions < V4.3.8), RUGGEDCOM RMC30 (All versions < V4.3.8), RUGGEDCOM RMC8388 V4.X (All versions < V4.3.8), RUGGEDCOM RMC8388 V5.X (All versions < V5.7.0), RUGGEDCOM RP110 (All versions < V4.3.8), RUGGEDCOM RS1600 (All versions < V4.3.8), RUGGEDCOM RS1600F (All versions < V4.3.8), RUGGEDCOM RS1600T (All versions < V4.3.8), RUGGEDCOM RS400 (All versions < V4.3.8), RUGGEDCOM RS401 (All versions < V4.3.8), RUGGEDCOM RS416 (All versions < V4.3.8), RUGGEDCOM RS416P (All versions < V4.3.8), RUGGEDCOM RS416Pv2 V4.X (All versions < V4.3.8), RUGGEDCOM RS416Pv2 V5.X (All versions < V5.7.0), RUGGEDCOM RS416v2 V4.X (All versions < V4.3.8), RUGGEDCOM RS416v2 V5.X (All versions < V5.7.0), RUGGEDCOM RS8000 (All versions < V4.3.8), RUGGEDCOM RS8000A (All versions < V4.3.8), RUGGEDCOM RS8000H (All versions < V4.3.8), RUGGEDCOM RS8000T (All versions < V4.3.8), RUGGEDCOM RS900 (All versions < V4.3.8), RUGGEDCOM RS900 (32M) V4.X (All versions < V4.3.8), RUGGEDCOM RS900 (32M) V5.X (All versions < V5.7.0), RUGGEDCOM RS900G (All versions < V4.3.8), RUGGEDCOM RS900G (32M) V4.X (All versions < V4.3.8), RUGGEDCOM RS900G (32M) V5.X (All versions < V5.7.0), RUGGEDCOM RS900GP (All versions < V4.3.8), RUGGEDCOM RS900L (All versions < V4.3.8), RUGGEDCOM RS900M-GETS-C01 (All versions < V4.3.8), RUGGEDCOM RS900M-GETS-XX (All versions < V4.3.8), RUGGEDCOM RS900M-STND-C01 (All versions < V4.3.8), RUGGEDCOM RS900M-STND-XX (All versions < V4.3.8), RUGGEDCOM RS900W (All versions < V4.3.8), RUGGEDCOM RS910 (All versions < V4.3.8), RUGGEDCOM RS910L (All versions < V4.3.8), RUGGEDCOM RS910W (All versions < V4.3.8), RUGGEDCOM RS920L (All versions < V4.3.8), RUGGEDCOM RS920W (All versions < V4.3.8), RUGGEDCOM RS930L (All versions < V4.3.8), RUGGEDCOM RS930W (All versions < V4.3.8), RUGGEDCOM RS940G (All versions < V4.3.8), RUGGEDCOM RS969 (All versions < V4.3.8), RUGGEDCOM RSG2100 (All versions < V4.3.8), RUGGEDCOM RSG2100 (32M) V4.X (All versions < V4.3.8), RUGGEDCOM RSG2100 (32M) V5.X (All versions < V5.7.0), RUGGEDCOM RSG2100P (All versions < V4.3.8), RUGGEDCOM RSG2100P (32M) V4.X (All versions < V4.3.8), RUGGEDCOM RSG2100P (32M) V5.X (All versions < V5.7.0), RUGGEDCOM RSG2200 (All versions < V4.3.8), RUGGEDCOM RSG2288 V4.X (All versions < V4.3.8), RUGGEDCOM RSG2288 V5.X (All versions < V5.7.0), RUGGEDCOM RSG2300 V4.X (All versions < V4.3.8), RUGGEDCOM RSG2300 V5.X (All versions < V5.7.0), RUGGEDCOM RSG2300P V4.X (All versions < V4.3.8), RUGGEDCOM RSG2300P V5.X (All versions < V5.7.0), RUGGEDCOM RSG2488 V4.X (All versions < V4.3.8), RUGGEDCOM RSG2488 V5.X (All versions < V5.7.0), RUGGEDCOM RSG907R (All versions < V5.7.0), RUGGEDCOM RSG908C (All versions < V5.7.0), RUGGEDCOM RSG909R (All versions < V5.7.0), RUGGEDCOM RSG910C (All versions < V5.7.0), RUGGEDCOM RSG920P V4.X (All versions < V4.3.8), RUGGEDCOM RSG920P V5.X (All versions < V5.7.0), RUGGEDCOM RSL910 (All versions < V5.7.0), RUGGEDCOM RST2228 (All versions < V5.7.0), RUGGEDCOM RST2228P (All versions < V5.7.0), RUGGEDCOM RST916C (All versions < V5.7.0), RUGGEDCOM RST916P (All versions < V5.7.0). The SSH server on affected devices is configured to offer weak ciphers by default.

This could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over the connection between legitimate clients and the affected device.

Patch / fix

  • Siemens RUGGEDCOM i800 V4.3.8
  • Siemens RUGGEDCOM i801 V4.3.8
  • Siemens RUGGEDCOM i802 V4.3.8
  • Siemens RUGGEDCOM i803 V4.3.8
  • Siemens RUGGEDCOM M2100 V4.3.8
  • Siemens RUGGEDCOM M2200 V4.3.8
  • Siemens RUGGEDCOM M969 V4.3.8
  • Siemens RUGGEDCOM RMC30 V4.3.8
  • Siemens RUGGEDCOM RMC8388 V4.X V4.3.8
  • Siemens RUGGEDCOM RMC8388 V5.X V5.7.0
  • Siemens RUGGEDCOM RP110 V4.3.8
  • Siemens RUGGEDCOM RS1600 V4.3.8
  • Siemens RUGGEDCOM RS1600F V4.3.8
  • Siemens RUGGEDCOM RS1600T V4.3.8
  • Siemens RUGGEDCOM RS400 V4.3.8
  • Siemens RUGGEDCOM RS401 V4.3.8
  • Siemens RUGGEDCOM RS416 V4.3.8
  • Siemens RUGGEDCOM RS416P V4.3.8
  • Siemens RUGGEDCOM RS416Pv2 V4.X V4.3.8
  • Siemens RUGGEDCOM RS416Pv2 V5.X V5.7.0
  • Siemens RUGGEDCOM RS416v2 V4.X V4.3.8
  • Siemens RUGGEDCOM RS416v2 V5.X V5.7.0
  • Siemens RUGGEDCOM RS8000 V4.3.8
  • Siemens RUGGEDCOM RS8000A V4.3.8
  • Siemens RUGGEDCOM RS8000H V4.3.8
  • Siemens RUGGEDCOM RS8000T V4.3.8
  • Siemens RUGGEDCOM RS900 V4.3.8
  • Siemens RUGGEDCOM RS900 (32M) V4.X V4.3.8
  • Siemens RUGGEDCOM RS900 (32M) V5.X V5.7.0
  • Siemens RUGGEDCOM RS900G V4.3.8

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-069-01 updated cvss 6.7

Siemens RUGGEDCOM Devices

  • Siemens RUGGEDCOM i800 < 4.3.8 Siemens RUGGEDCOM i801 < 4.3.8 Siemens RUGGEDCOM i802 < 4.3.8 Siemens RUGGEDCOM i803 < 4.3.8 Siemens RUGGEDCOM M969 < 4.3.8 Siemens RUGGEDCOM M2100 < 4.3.8
    +3 more products
    Siemens RUGGEDCOM M2200 < 4.3.8 Siemens RUGGEDCOM RMC30 < 4.3.8 Siemens RUGGEDCOM RMC8388 V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RMC8388 V5.X < 5.7.0
    affected: fixed in V5.7.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RP110 < 4.3.8 Siemens RUGGEDCOM RS400 < 4.3.8 Siemens RUGGEDCOM RS401 < 4.3.8 Siemens RUGGEDCOM RS416 < 4.3.8 Siemens RUGGEDCOM RS416P < 4.3.8 Siemens RUGGEDCOM RS416Pv2 V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416Pv2 V5.X < 5.7.0
    affected: fixed in V5.7.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416v2 V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416v2 V5.X < 5.7.0
    affected: fixed in V5.7.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS900 < 4.3.8 Siemens RUGGEDCOM RS900 (32M) V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS900 (32M) V5.X < 5.7.0
    affected: fixed in V5.7.0, mitigation support.industry.siemens.com
show 3 more
  • Siemens RUGGEDCOM RS900G < 4.3.8 Siemens RUGGEDCOM RS900G (32M) V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS900G (32M) V5.X < 5.7.0
    affected: fixed in V5.7.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS900GP < 4.3.8 Siemens RUGGEDCOM RS900L < 4.3.8 Siemens RUGGEDCOM RS900M-GETS-C01 < 4.3.8 Siemens RUGGEDCOM RS900M-GETS-XX < 4.3.8 Siemens RUGGEDCOM RS900M-STND-C01 < 4.3.8 Siemens RUGGEDCOM RS900M-STND-XX < 4.3.8
    +9 more products
    Siemens RUGGEDCOM RS900W < 4.3.8 Siemens RUGGEDCOM RS910 < 4.3.8 Siemens RUGGEDCOM RS910L < 4.3.8 Siemens RUGGEDCOM RS910W < 4.3.8 Siemens RUGGEDCOM RS920L < 4.3.8 Siemens RUGGEDCOM RS920W < 4.3.8 Siemens RUGGEDCOM RS930L < 4.3.8 Siemens RUGGEDCOM RS930W < 4.3.8 Siemens RUGGEDCOM RS940G < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com

34 more affected in the full advisory

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H/E:P/RL:U/RC:C
CNA 3.1 6.7 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • Siemens RUGGEDCOM i800
  • Siemens RUGGEDCOM i801
  • Siemens RUGGEDCOM i802
  • Siemens RUGGEDCOM i803
  • Siemens RUGGEDCOM M2100
  • Siemens RUGGEDCOM M2200
  • Siemens RUGGEDCOM M969
  • Siemens RUGGEDCOM RMC30
  • Siemens RUGGEDCOM RMC8388 V4.X
  • Siemens RUGGEDCOM RMC8388 V5.X
  • Siemens RUGGEDCOM RP110
  • Siemens RUGGEDCOM RS1600
  • Siemens RUGGEDCOM RS1600F
  • Siemens RUGGEDCOM RS1600T
  • Siemens RUGGEDCOM RS400
  • Siemens RUGGEDCOM RS401
  • Siemens RUGGEDCOM RS416
  • Siemens RUGGEDCOM RS416P
  • Siemens RUGGEDCOM RS416Pv2 V4.X
  • Siemens RUGGEDCOM RS416Pv2 V5.X
  • Siemens RUGGEDCOM RS416v2 V4.X
  • Siemens RUGGEDCOM RS416v2 V5.X
  • Siemens RUGGEDCOM RS8000
  • Siemens RUGGEDCOM RS8000A
  • Siemens RUGGEDCOM RS8000H
  • Siemens RUGGEDCOM RS8000T
  • Siemens RUGGEDCOM RS900
  • Siemens RUGGEDCOM RS900 (32M) V4.X
  • Siemens RUGGEDCOM RS900 (32M) V5.X
  • Siemens RUGGEDCOM RS900G
  • Siemens RUGGEDCOM RS900G (32M) V4.X
  • Siemens RUGGEDCOM RS900G (32M) V5.X
  • Siemens RUGGEDCOM RS900GP
  • Siemens RUGGEDCOM RS900L
  • Siemens RUGGEDCOM RS900M-GETS-C01
  • Siemens RUGGEDCOM RS900M-GETS-XX
  • Siemens RUGGEDCOM RS900M-STND-C01
  • Siemens RUGGEDCOM RS900M-STND-XX
  • Siemens RUGGEDCOM RS900W
  • Siemens RUGGEDCOM RS910
  • Siemens RUGGEDCOM RS910L
  • Siemens RUGGEDCOM RS910W
  • Siemens RUGGEDCOM RS920L
  • Siemens RUGGEDCOM RS920W
  • Siemens RUGGEDCOM RS930L
  • Siemens RUGGEDCOM RS930W
  • Siemens RUGGEDCOM RS940G
  • Siemens RUGGEDCOM RS969
  • Siemens RUGGEDCOM RSG2100
  • Siemens RUGGEDCOM RSG2100 (32M) V4.X

Classification

Weakness
  • CWE-326 Inadequate Encryption Strength
  • CWE-311 Missing Encryption of Sensitive Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.