vciy

CVE-2023-26613

INDEX BUILT · 2026-09-20

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An OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to execute arbitrary operating system…

CVE-2023-266133 of 4 sources documented this
35

rank 35 = 8 + 25 + 0 + 2 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.31396  ·  without this subject the record ranks 27

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 10

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 35

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 33

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 35

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.57Mover the next 30 days, if this record is yours
Movement+$2.33Mon 2025-11-21, the last material move, 7 months before this reading
Basisassumeda published average, not your estate

$1.57M = $4.99M incident cost x 1 exposure x 0.31396 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

0.31396EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 15 days at 0.31, as of 2026-06-30. arc-rules@v1

Foresight · where to check next

PHPCVE-2023-43208CVE-2021-27104QNAP Systems Inc.CVE-2019-15107CVE-2019-1605726613

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

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

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Harm, if it fires from the vector and the weakness

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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]

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 30 Jun 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.

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, NVD9.8 CRITICALreceipt
Exploit probability0.31396 · top 2% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes21 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesDlink dir-823g firmwarereceipt
Published rangesdlink dir-823g firmware 1.02b05receipt

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

An OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to execute arbitrary operating system commands via a crafted GET request to EXCU_SHELL. 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
dlink dir-823g firmware 1.02b05

check it yourself dlink.com github.com receipt

Dated events

2025-03-17EPSS moved 0.01 to 0.222025-04-15EPSS moved 0.22 to 0.712026-06-15EPSS moved 0.64 to 0.29

Movement the material steps

30 Jun 20230.00043
17 Mar 20250.22311 · crossed 0.10 · scoring model v2025.03.14
15 Apr 20250.71322 · crossed 0.50
18 Nov 20250.22311 · crossed 0.50
21 Nov 20250.68946 · crossed 0.50
15 Jun 20260.29098 · crossed 0.50 · scoring model v2026.06.15
30 Jun 20260.31396

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 21 observations
30 Jun 20230.00043
7 Jul 20230.00097
8 Jul 20230.00120
29 May 20240.00116
5 Jul 20240.00221
31 Jul 20240.00249
9 Dec 20240.00275
17 Dec 20240.00318
19 Jan 20250.00421
3 Feb 20250.00672
17 Mar 20250.22311
29 Mar 20250.30931
30 Mar 20250.22311
15 Apr 20250.71322
25 Jul 20250.68946
18 Nov 20250.22311
21 Nov 20250.68946
24 Mar 20260.66276
25 Apr 20260.63549
15 Jun 20260.29098
30 Jun 20260.31396

21 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 0.31396Published2023-06-29Index as of2026-06-30

Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.22311 → 0.68946) and the record had been public for 3 years when this index was last written.

Published 2023-06-29 receipt · Index as of 2026-06-30 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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