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Fencer Vulns
critical 9.8

CVE-2021-42018 json

A vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i800NC, RUGGEDCOM i801, RUGGEDCOM i801NC, RUGGEDCOM i802, RUGGEDCOM i802NC…

published 2022-03-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29006

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

A vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i800NC, RUGGEDCOM i801, RUGGEDCOM i801NC, RUGGEDCOM i802, RUGGEDCOM i802NC, RUGGEDCOM i803, RUGGEDCOM i803NC, RUGGEDCOM M2100, RUGGEDCOM M2100F, RUGGEDCOM M2100NC, RUGGEDCOM M2200, RUGGEDCOM M2200F, RUGGEDCOM M2200NC, RUGGEDCOM M969, RUGGEDCOM M969F, RUGGEDCOM M969NC, RUGGEDCOM RMC30, RUGGEDCOM RMC30NC, RUGGEDCOM RMC8388 V4.X, RUGGEDCOM RMC8388 V5.X, RUGGEDCOM RMC8388NC V4.X, RUGGEDCOM RMC8388NC V5.X, RUGGEDCOM RP110, RUGGEDCOM RP110NC, RUGGEDCOM RS1600, RUGGEDCOM RS1600F, RUGGEDCOM RS1600FNC, RUGGEDCOM RS1600NC, RUGGEDCOM RS1600T, RUGGEDCOM RS1600TNC, RUGGEDCOM RS400, RUGGEDCOM RS400F, RUGGEDCOM RS400NC, RUGGEDCOM RS401, RUGGEDCOM RS401NC, RUGGEDCOM RS416, RUGGEDCOM RS416F, RUGGEDCOM RS416NC, RUGGEDCOM RS416NCv2 V4.X, RUGGEDCOM RS416NCv2 V5.X, RUGGEDCOM RS416P, RUGGEDCOM RS416PF, RUGGEDCOM RS416PNC, RUGGEDCOM RS416PNCv2 V4.X, RUGGEDCOM RS416PNCv2 V5.X, RUGGEDCOM RS416Pv2 V4.X, RUGGEDCOM RS416Pv2 V5.X, RUGGEDCOM RS416v2 V4.X, RUGGEDCOM RS416v2 V5.X, RUGGEDCOM RS8000, RUGGEDCOM RS8000A, RUGGEDCOM RS8000ANC, RUGGEDCOM RS8000H, RUGGEDCOM RS8000HNC, RUGGEDCOM RS8000NC, RUGGEDCOM RS8000T, RUGGEDCOM RS8000TNC, RUGGEDCOM RS900, RUGGEDCOM RS900 (32M) V4.X, RUGGEDCOM RS900 (32M) V5.X, RUGGEDCOM RS900F, RUGGEDCOM RS900G, RUGGEDCOM RS900G (32M) V4.X, RUGGEDCOM RS900G (32M) V5.X, RUGGEDCOM RS900GF, RUGGEDCOM RS900GNC, RUGGEDCOM RS900GNC(32M) V4.X, RUGGEDCOM RS900GNC(32M) V5.X, RUGGEDCOM RS900GP, RUGGEDCOM RS900GPF, RUGGEDCOM RS900GPNC, RUGGEDCOM RS900L, RUGGEDCOM RS900LNC, RUGGEDCOM RS900M-GETS-C01, RUGGEDCOM RS900M-GETS-XX, RUGGEDCOM RS900M-STND-C01, RUGGEDCOM RS900M-STND-XX, RUGGEDCOM RS900MNC-GETS-C01, RUGGEDCOM RS900MNC-GETS-XX, RUGGEDCOM RS900MNC-STND-XX, RUGGEDCOM RS900MNC-STND-XX-C01, RUGGEDCOM RS900NC, RUGGEDCOM RS900NC(32M) V4.X, RUGGEDCOM RS900NC(32M) V5.X, RUGGEDCOM RS900W, RUGGEDCOM RS910, RUGGEDCOM RS910L, RUGGEDCOM RS910LNC, RUGGEDCOM RS910NC, RUGGEDCOM RS910W, RUGGEDCOM RS920L, RUGGEDCOM RS920LNC, RUGGEDCOM RS920W, RUGGEDCOM RS930L, RUGGEDCOM RS930LNC, RUGGEDCOM RS930W, RUGGEDCOM RS940G, RUGGEDCOM RS940GF, RUGGEDCOM RS940GNC, RUGGEDCOM RS969, RUGGEDCOM RS969NC, RUGGEDCOM RSG2100, RUGGEDCOM RSG2100 (32M) V4.X, RUGGEDCOM RSG2100 (32M) V5.X, RUGGEDCOM RSG2100F, RUGGEDCOM RSG2100NC, RUGGEDCOM RSG2100NC(32M) V4.X, RUGGEDCOM RSG2100NC(32M) V5.X, RUGGEDCOM RSG2100P, RUGGEDCOM RSG2100P (32M) V4.X, RUGGEDCOM RSG2100P (32M) V5.X, RUGGEDCOM RSG2100PF, RUGGEDCOM RSG2100PNC, RUGGEDCOM RSG2100PNC (32M) V4.X, RUGGEDCOM RSG2100PNC (32M) V5.X, RUGGEDCOM RSG2200, RUGGEDCOM RSG2200F, RUGGEDCOM RSG2200NC, RUGGEDCOM RSG2288 V4.X, RUGGEDCOM RSG2288 V5.X, RUGGEDCOM RSG2288NC V4.X, RUGGEDCOM RSG2288NC V5.X, RUGGEDCOM RSG2300 V4.X, RUGGEDCOM RSG2300 V5.X, RUGGEDCOM RSG2300F, RUGGEDCOM RSG2300NC V4.X, RUGGEDCOM RSG2300NC V5.X, RUGGEDCOM RSG2300P V4.X, RUGGEDCOM RSG2300P V5.X, RUGGEDCOM RSG2300PF, RUGGEDCOM RSG2300PNC V4.X, RUGGEDCOM RSG2300PNC V5.X, RUGGEDCOM RSG2488 V4.X, RUGGEDCOM RSG2488 V5.X, RUGGEDCOM RSG2488F, RUGGEDCOM RSG2488NC V4.X, RUGGEDCOM RSG2488NC V5.X, RUGGEDCOM RSG907R, RUGGEDCOM RSG908C, RUGGEDCOM RSG909R, RUGGEDCOM RSG910C, RUGGEDCOM RSG920P V4.X, RUGGEDCOM RSG920P V5.X, RUGGEDCOM RSG920PNC V4.X, RUGGEDCOM RSG920PNC V5.X, RUGGEDCOM RSL910, RUGGEDCOM RSL910NC, RUGGEDCOM RST2228, RUGGEDCOM RST2228P, RUGGEDCOM RST916C, RUGGEDCOM RST916P. Within a third-party component, whenever memory allocation is requested, the out of bound size is not checked.

Therefore, if size exceeding the expected allocation is assigned, it could allocate a smaller buffer instead. If an attacker were to exploit this, they could cause a heap overflow.

Patch / fix

  • Siemens RUGGEDCOM i800 V4.3.8
  • Siemens RUGGEDCOM i800NC V4.3.8
  • Siemens RUGGEDCOM i801 V4.3.8
  • Siemens RUGGEDCOM i801NC V4.3.8
  • Siemens RUGGEDCOM i802 V4.3.8
  • Siemens RUGGEDCOM i802NC V4.3.8
  • Siemens RUGGEDCOM i803 V4.3.8
  • Siemens RUGGEDCOM i803NC V4.3.8
  • Siemens RUGGEDCOM M2100 V4.3.8
  • Siemens RUGGEDCOM M2100NC V4.3.8
  • Siemens RUGGEDCOM M2200 V4.3.8
  • Siemens RUGGEDCOM M2200NC V4.3.8
  • Siemens RUGGEDCOM M969 V4.3.8
  • Siemens RUGGEDCOM M969NC V4.3.8
  • Siemens RUGGEDCOM RMC30 V4.3.8
  • Siemens RUGGEDCOM RMC30NC V4.3.8
  • Siemens RUGGEDCOM RMC8388 V4.X V4.3.8
  • Siemens RUGGEDCOM RMC8388 V5.X V5.6.0
  • Siemens RUGGEDCOM RMC8388NC V4.X V4.3.8
  • Siemens RUGGEDCOM RMC8388NC V5.X V5.6.0
  • Siemens RUGGEDCOM RP110 V4.3.8
  • Siemens RUGGEDCOM RP110NC V4.3.8
  • Siemens RUGGEDCOM RS1600 V4.3.8
  • Siemens RUGGEDCOM RS1600F V4.3.8
  • Siemens RUGGEDCOM RS1600FNC V4.3.8
  • Siemens RUGGEDCOM RS1600NC V4.3.8
  • Siemens RUGGEDCOM RS1600T V4.3.8
  • Siemens RUGGEDCOM RS1600TNC V4.3.8
  • Siemens RUGGEDCOM RS400 V4.3.8
  • Siemens RUGGEDCOM RS400NC V4.3.8

Vendor advisories

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

cisa ICSA-22-069-12 updated cvss 5.9

Siemens RUGGEDCOM ROS

  • Siemens RUGGEDCOM i800 < 4.3.8 Siemens RUGGEDCOM i800NC < 4.3.8 Siemens RUGGEDCOM i801 < 4.3.8 Siemens RUGGEDCOM i801NC < 4.3.8 Siemens RUGGEDCOM i802 < 4.3.8 Siemens RUGGEDCOM i802NC < 4.3.8
    +3 more products
    Siemens RUGGEDCOM i803 < 4.3.8 Siemens RUGGEDCOM i803NC < 4.3.8 Siemens RUGGEDCOM M969 < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM M969F
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM M969NC < 4.3.8 Siemens RUGGEDCOM M2100 < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM M2100F
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM M2100NC < 4.3.8 Siemens RUGGEDCOM M2200 < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM M2200F
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM M2200NC < 4.3.8 Siemens RUGGEDCOM RMC30 < 4.3.8 Siemens RUGGEDCOM RMC30NC < 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 < 5.6.0
    affected: fixed in V5.6.0, mitigation support.industry.siemens.com
show 12 more
  • Siemens RUGGEDCOM RMC8388NC V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RMC8388NC V5.X < 5.6.0
    affected: fixed in V5.6.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RP110 < 4.3.8 Siemens RUGGEDCOM RP110NC < 4.3.8 Siemens RUGGEDCOM RS400 < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS400F
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM RS400NC < 4.3.8 Siemens RUGGEDCOM RS401 < 4.3.8 Siemens RUGGEDCOM RS401NC < 4.3.8 Siemens RUGGEDCOM RS416 < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416F
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM RS416NC < 4.3.8 Siemens RUGGEDCOM RS416NCv2 V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416NCv2 V5.X < 5.6.0
    affected: fixed in V5.6.0, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416P < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416PF
    affected: mitigation, no fix planned
  • Siemens RUGGEDCOM RS416PNC < 4.3.8 Siemens RUGGEDCOM RS416PNCv2 V4.X < 4.3.8
    affected: fixed in V4.3.8, mitigation support.industry.siemens.com
  • Siemens RUGGEDCOM RS416PNCv2 V5.X < 5.6.0
    affected: fixed in V5.6.0, mitigation support.industry.siemens.com

112 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
2 y ago

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Siemens RUGGEDCOM i800
  • Siemens RUGGEDCOM i800NC
  • Siemens RUGGEDCOM i801
  • Siemens RUGGEDCOM i801NC
  • Siemens RUGGEDCOM i802
  • Siemens RUGGEDCOM i802NC
  • Siemens RUGGEDCOM i803
  • Siemens RUGGEDCOM i803NC
  • Siemens RUGGEDCOM M2100
  • Siemens RUGGEDCOM M2100F
  • Siemens RUGGEDCOM M2100NC
  • Siemens RUGGEDCOM M2200
  • Siemens RUGGEDCOM M2200F
  • Siemens RUGGEDCOM M2200NC
  • Siemens RUGGEDCOM M969
  • Siemens RUGGEDCOM M969F
  • Siemens RUGGEDCOM M969NC
  • Siemens RUGGEDCOM RMC30
  • Siemens RUGGEDCOM RMC30NC
  • Siemens RUGGEDCOM RMC8388 V4.X
  • Siemens RUGGEDCOM RMC8388 V5.X
  • Siemens RUGGEDCOM RMC8388NC V4.X
  • Siemens RUGGEDCOM RMC8388NC V5.X
  • Siemens RUGGEDCOM RP110
  • Siemens RUGGEDCOM RP110NC
  • Siemens RUGGEDCOM RS1600
  • Siemens RUGGEDCOM RS1600F
  • Siemens RUGGEDCOM RS1600FNC
  • Siemens RUGGEDCOM RS1600NC
  • Siemens RUGGEDCOM RS1600T
  • Siemens RUGGEDCOM RS1600TNC
  • Siemens RUGGEDCOM RS400
  • Siemens RUGGEDCOM RS400F
  • Siemens RUGGEDCOM RS400NC
  • Siemens RUGGEDCOM RS401
  • Siemens RUGGEDCOM RS401NC
  • Siemens RUGGEDCOM RS416
  • Siemens RUGGEDCOM RS416F
  • Siemens RUGGEDCOM RS416NC
  • Siemens RUGGEDCOM RS416NCv2 V4.X
  • Siemens RUGGEDCOM RS416NCv2 V5.X
  • Siemens RUGGEDCOM RS416P
  • Siemens RUGGEDCOM RS416PF
  • Siemens RUGGEDCOM RS416PNC
  • Siemens RUGGEDCOM RS416PNCv2 V4.X
  • Siemens RUGGEDCOM RS416PNCv2 V5.X
  • Siemens RUGGEDCOM RS416Pv2 V4.X
  • Siemens RUGGEDCOM RS416Pv2 V5.X
  • Siemens RUGGEDCOM RS416v2 V4.X
  • Siemens RUGGEDCOM RS416v2 V5.X

Classification

Weakness

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.