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CVE-2021-36260

INDEX BUILT · 2026-09-20

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A command injection vulnerability in the web server of some Hikvision product

CVE-2021-362603 of 4 sources documented this
81

rank 81 = 40 + 25 + 0 + 10 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.99869 · CISA KEV listed  ·  without this subject the record ranks 41

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 56

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 81

How much of the world it touches

NVD CPE configurations

19 products in the CPE ranges  ·  without this subject the record ranks 71

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 75

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.98Mover the next 30 days, if this record is yours
Movement+$230,000on 2022-11-15, the last material move, 3 years, 9 months before this reading
Basisassumeda published average, not your estate

$4.98M = $4.99M incident cost x 1 exposure x 0.99869 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.

Hindsight · the state

0.99869EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2022-11-15, 1389 days at 1.00, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

PHPCVE-2023-43208CVE-2021-27104QNAP Systems Inc.CVE-2019-15107CVE-2019-1605736260

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

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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

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')receipt
Published consequencesCWE-78: Confidentiality, Integrity, Availability, Non-Repudiation: Execute Unauthorized Code or Commands, DoS: Crash, Exit, or Restart, Read Files or Directories, Modify Files or Directories, Read…[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed inNo fix version in held sources, as the index stood on 4 Sep 2026.
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.
CISA remediation statusoverdue since 2022-01-24receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV110 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2022-01-10.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 14 public repositories2021-10-18receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-01-10receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.99869 · top 0.04% of all CVEsreceipt
Blast breadth19 products across 1 vendorderived
Assigned byhikvisionreceipt
Recorded changes60 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesHikvision ds-7608ni-k1\/8p\/4g firmware; Hikvision ds-7616ni-k1 firmware; Hikvision ds-7604ni-q1 firmware; and 16 morereceipt
Published rangeshikvision ds-7608ni-k1\/8p\/4g firmware >= 4.30.210 <= 4.31.000; hikvision ds-7616ni-k1 firmware >= 4.30.210 <= 4.31.000; hikvision ds-7604ni-q1 firmware >= 4.30.210 <= 4.31.000; hikvision ds-7604ni-q1\/4p firmware >= 4.30.210 <= 4.31.000receipt
Show all 19 published ranges
hikvision ds-7608ni-k1\/8p\/4g firmware >= 4.30.210 <= 4.31.000
hikvision ds-7616ni-k1 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7604ni-q1 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7604ni-q1\/4p firmware >= 4.30.210 <= 4.31.000
hikvision ds-7608ni-q1 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7608ni-q1\/8p firmware >= 4.30.210 <= 4.31.000
hikvision ds-7608ni-q2 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7608ni-q2\/8p firmware >= 4.30.210 <= 4.31.000
hikvision ds-7616ni-q1 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7616ni-q2 firmware >= 4.30.210 <= 4.31.000
hikvision ds-7616ni-q2\/16p firmware >= 4.30.210 <= 4.31.000
hikvision ds-7104ni-q1 firmware >= 4.30.300 <= 4.31.100
hikvision ds-7104ni-q1\/4p firmware >= 4.30.300 <= 4.31.100
hikvision ds-7104ni-q1\/4p\/m firmware >= 4.30.300 <= 4.31.100
hikvision ds-7104ni-q1\/m firmware >= 4.30.300 <= 4.31.100
hikvision ds-7108ni-q1 firmware >= 4.30.300 <= 4.31.100
hikvision ds-7108ni-q1\/8p firmware >= 4.30.300 <= 4.31.100
hikvision ds-7108ni-q1\/8p\/m firmware >= 4.30.300 <= 4.31.100
hikvision ds-7108ni-q1\/m firmware >= 4.30.300 <= 4.31.100

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.

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What it is stated by the CNA

A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious commands. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-78
affected versions
hikvision ds-7608ni-k1\/8p\/4g firmware >= 4.30.210 <= 4.31.000; hikvision ds-7616ni-k1 firmware >= 4.30.210 <= 4.31.000; hikvision ds-7604ni-q1 firmware >= 4.30.210 <= 4.31.000; and 16 more, listed in full below
also scored by
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself hikvision.com packetstormsecurity.com packetstormsecurity.com cyfirma.com therecord.media receipt

Dated events

2022-01-10Added to CISA KEV2022-01-24CISA remediation due2022-02-04EPSS moved 0.03 to 0.382022-02-26EPSS moved 0.38 to 0.892026-06-15EPSS moved 0.94 to 1.00

Movement the material steps

23 Sep 20210.00442
4 Feb 20220.38457 · crossed 0.10
26 Feb 20220.89301 · crossed 0.50
15 Nov 20220.92398 · crossed 0.90
7 Mar 20230.97536 · scoring model v2023.03.01
17 Mar 20250.94436 · scoring model v2025.03.14
15 Jun 20260.99869 · scoring model v2026.06.15
Show all 46 observations
23 Sep 20210.00442
26 Oct 20210.02909
4 Feb 20220.38457
26 Feb 20220.89301
15 Jul 20220.83222
13 Aug 20220.84323
25 Aug 20220.87785
15 Nov 20220.92398
15 Dec 20220.93002
7 Mar 20230.97536
18 Mar 20230.97512
2 Apr 20230.97495
15 Apr 20230.97478
30 Apr 20230.97479
8 May 20230.97495
14 May 20230.97497
27 Jun 20230.97503
8 Jul 20230.97511
12 Jul 20230.97512
26 Jul 20230.97514
22 Sep 20230.97507
19 Oct 20230.97502
30 Nov 20230.97506
27 Dec 20230.97504
12 Jan 20240.97484
7 Feb 20240.97511
6 Mar 20240.97493
16 Apr 20240.97505
28 Apr 20240.97485
7 Jun 20240.97483
18 Jul 20240.97477
9 Oct 20240.97462
25 Oct 20240.97463
23 Nov 20240.97455
17 Dec 20240.97406
24 Dec 20240.97407
8 Jan 20250.97409
9 Feb 20250.97397
25 Feb 20250.97410
14 Mar 20250.97408
17 Mar 20250.94436
9 Jul 20250.94399
15 Jul 20250.94436
18 Nov 20250.9427
21 Nov 20250.94436
15 Jun 20260.99869

46 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 0.99869Published2021-09-22Public PoC2021-10-18CISA KEV2022-01-10Index as of2026-09-04

Listed by CISA 110 days after it published and the record had been public for 4 years, 11 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2021-09-22 receipt · Public PoC 2021-10-18 receipt · CISA KEV 2022-01-10 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2024-4577 · PHPmatches 8 of 8KEV listed · 2024receipt
CVE-2023-43208matches 8 of 8KEV listed · 2023receipt
CVE-2021-27104matches 8 of 8KEV listed · 2021receipt
CVE-2018-19949 · QNAP Systems Inc. QTSmatches 8 of 8KEV listed · 2020receipt
CVE-2019-15107matches 8 of 8KEV listed · 2019receipt
CVE-2019-16057matches 8 of 8KEV listed · 2019receipt

"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

6775 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.

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