vciy

CVE-2021-37208

INDEX BUILT · 2026-10-18

No source can show you its own past. This one can.

Print this page to keep the view as it stands on this date. Everything hidden behind a disclosure opens, and every receipt prints with its value.

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

CVE-2021-372084 of 4 sources documented this
11

rank 11 = 0 + 9 + 0 + 2 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00535  ·  without this subject the record ranks 11

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 3.5, from NVD  ·  without this subject the record ranks 2

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 11

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 9

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 11

Hindsight · the state

0.00535EPSSNOT IN KEVas of 2026-10-18
Severity9.6 CRITICALreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementfallenreceipt
PLATEAU10Minimal movement since 2022-03-09, 1602 days at 0.01, as of 2026-07-28. arc-rules@v1

Foresight · where to check next

CVE-2018-6882CVE-2024-27443CVE-2024-37383CVE-2024-42009CVE-2023-34192CVE-2023-3758037208

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 49146 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Sources disagree here.

Severity score
Siemens9.6 CRITICALreceipt
NVD3.5 LOWreceipt
Scoring standard
SiemensCVSS v3.1receipt
NVDCVSS v2.0receipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Which product do you run? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

What counts as a move

Choose your product above to watch it.

Set up a watchlist (free with an account: one stack of three products)

Record your call

Keep your verdict, your reason and the evidence together. The record takes its date when you save it.

Patch by…

Or open an investigation: an incident or a near miss on this CVE, kept with its evidence where anyone in your organisation can find it.

Choose your verdict, then sign in or use an email link. Your first 100 records are free. Evidence is frozen when the record is created.

Private to your organization unless you share it. Put the proof link in your ticket so a reviewer can inspect the basis for your call. See how decision records work.

Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · user interaction required · low attack complexityreceipt
ImpactPartial confidentiality loss; complete integrity and availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')receipt
Published consequencesCWE-79: Access Control, Confidentiality: Bypass Protection Mechanism, Read Application Data; Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands…cwe-consequences@4.20

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchruggedcom ros 5.6.0receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
BOD 26-04 deadlineIf the system is reachable from the internet: 14 days. If not: fix at the next system upgrade.derived
Show full BOD 26-04 deadline

CISA has not scored it, so the directive's own defaults apply: automatable no, technical impact total. Calendar days from the KEV listing or from when you find it on a system, whichever is first. Federal agencies are bound from 7 Dec 2026, and contracts often carry it to suppliers. The directive and its table

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.6 CRITICALreceipt
CVSS, NVD3.5 LOWreceipt
Exploit probability0.00535 · top 56% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bysiemensreceipt
Recorded changes20 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productSiemens RUGGEDCOM i800; Siemens RUGGEDCOM i800NC; Siemens RUGGEDCOM i801; Siemens RUGGEDCOM i801NC; Siemens RUGGEDCOM i802; Siemens RUGGEDCOM i802NC; Siemens RUGGEDCOM i803; Siemens RUGGEDCOM i803NC…receipt
Published rangessiemens ruggedcom ros < 5.6.0receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$24,800over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$24,800 = $4.99M incident cost x 0.928046732894921 exposure x 0.00535 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Did this affect your environment?Answering needs an account.

Attack path

Network requestrequires user interactionSiemens RUGGEDCOM i800CWE-79 cross-site scriptingAdjacent componentsscope changeIntegrity and availability lossI:H / A:Hexploits CWE-79scope changedata compromise

What it is stated by the CNA

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, RUGGE receipt

Read the rest of the CNA's description

DCOM 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. Improper neutralization of special characters on the web server configuration page could allow an attacker, in a privileged position, to retrieve sensitive information via cross-site scripting.

NVD's analysis a second authority

severity
3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
weakness
CWE-79
affected versions
siemens ruggedcom ros < 5.6.0
also scored by
productcert@siemens.com 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:H · nvd@nist.gov 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

The CNA scored it 9.6 and NVD 3.5. Both are shown because both were published; we do not pick one.

check it yourself cert-portal.siemens.com cert-portal.siemens.com receipt

Movement the material steps

9 Mar 20220.00885
7 Mar 20234.8e-4 · scoring model v2023.03.01
17 Mar 20250.00478 · scoring model v2025.03.14
15 Jun 20260.00514 · scoring model v2026.06.15
28 Jul 20260.00535
Show all 20 observations
9 Mar 20220.00885
7 Mar 20234.8e-4
8 Mar 20230.00048
15 Mar 20230.00079
19 Aug 20230.00088
29 Sep 20230.00091
21 Nov 20240.00093
17 Dec 20240.00044
17 Mar 20250.00478
23 Mar 20250.00641
29 Mar 20250.00742
30 Mar 20250.00641
6 Apr 20250.00625
27 Apr 20250.00604
9 May 20250.00626
12 Aug 20250.00579
19 Mar 20260.00348
15 Jun 20260.00514
7 Jul 20260.00526
28 Jul 20260.00535

20 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00535Published2022-03-08Index as of2026-07-28

The record had been public for 4 years, 4 months when this index was last written.

Published 2022-03-08 receipt · Index as of 2026-07-28 derived

The pattern, elsewhere

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 49146 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. cwe-consequences@4.20

CVE-2018-6882matches 6 of 8KEV listed · 2018receipt
CVE-2024-27443matches 6 of 8KEV listed · 2024receipt
CVE-2024-37383matches 6 of 8KEV listed · 2024receipt
CVE-2024-42009matches 6 of 8KEV listed · 2024receipt
CVE-2023-34192matches 6 of 8KEV listed · 2023receipt
CVE-2023-37580matches 6 of 8KEV listed · 2023receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

49146 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

Fixed with these, by one advisory

Of the 6 records in this advisory that state one, this holds the lowest NVD CVSS score: 3.5.

Listed because one advisory covers them, not because they are the same defect. Each record's own state is on its own page.

Grouping: held values

Browse the index from here

These are index-wide views, not findings about CVE-2021-37208.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

Everything on this page is free. Public data. Withholding it protects nothing.