vciy

CVE-2026-24061

INDEX BUILT · 2026-09-20

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telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

CVE-2026-240614 of 4 sources documented this
84

rank 84 = 40 + 25 + 7 + 4 + 8

rank@v1 · act now

Someone is already using it

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

EPSS 0.98064 · CISA KEV listed  ·  without this subject the record ranks 44

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from the CNA  ·  without this subject the record ranks 59

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-02-13  ·  without this subject the record ranks 77

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 80

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 76

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.89Mover the next 30 days, if this record is yours
Movement+$202,000on 2026-04-30, the last material move, 4 months before this reading
Basisassumeda published average, not your estate

$4.89M = $4.99M incident cost x 1 exposure x 0.98064 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

0.98064EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-04-30, 141 days at 0.98, as of 2026-09-18. arc-rules@v1

Foresight · where to check next

CVE-2016-10033CVE-2024-41710AtlassianMikrotik RouterOS24061

This record is one instance of CWE-88, improper neutralization of argument delimiters in a command ('argument injection'). The index holds 455 prior instances of this class, 4 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 · the CNA's vectorreceipt
Weakness classCWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')receipt
Published consequencesCWE-88: Confidentiality, Integrity, Availability, Other: Execute Unauthorized Code or Commands, Alter Execution Logic, Read Application Data, Modify Application Data[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 18 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 2026-02-16receipt
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV5 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2026-01-26.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 14 public repositories2026-01-21receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2026-01-26receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.8 CRITICALreceipt
Exploit probability0.98064 · top 0.09% of all CVEsreceipt
Blast breadth2 products across 2 vendorsderived
Assigned bymitrereceipt
Recorded changes49 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productGNU Inetutilsreceipt
Published rangesgnu inetutils >= 1.9.3 <= 2.7; debian linux 11.0receipt

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.

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Attack path

Unauthenticated network requestno credentials, no interactionCISA KEV listingadded 01-26 · due 02-16GNU InetutilsCWE-88 weaknessFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-88data compromise

What it is stated by the CNA

telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable. receipt

NVD's analysis a second authority

weakness
CWE-88
affected versions
gnu inetutils >= 1.9.3 <= 2.7; debian linux 11.0
also scored by
[email protected] 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself openwall.com openwall.com gnu.org lists.gnu.org codeberg.org codeberg.org +2 morereceipt

Dated events

2026-01-26Added to CISA KEV2026-01-27EPSS moved 0.00 to 0.342026-02-13EPSS moved 0.38 to 0.842026-02-16CISA remediation due2026-06-15EPSS moved 0.92 to 0.99

Movement the material steps

21 Jan 20260.00362
27 Jan 20260.34452 · crossed 0.10
13 Feb 20260.8389 · crossed 0.50
6 Mar 20260.72488
26 Mar 20260.86773
30 Apr 20260.91812 · crossed 0.90
15 Jun 20260.98871 · scoring model v2026.06.15
18 Sep 20260.98064

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

Show all 33 observations
21 Jan 20260.00362
23 Jan 20260.00412
25 Jan 20260.00488
27 Jan 20260.34452
29 Jan 20260.24856
30 Jan 20260.33896
31 Jan 20260.29552
8 Feb 20260.32541
11 Feb 20260.36947
12 Feb 20260.37881
13 Feb 20260.8389
15 Feb 20260.82703
18 Feb 20260.76937
22 Feb 20260.77919
4 Mar 20260.81032
6 Mar 20260.72488
12 Mar 20260.75268
17 Mar 20260.78059
21 Mar 20260.7562
26 Mar 20260.86773
30 Mar 20260.87007
10 Apr 20260.88021
20 Apr 20260.88681
21 Apr 20260.87007
27 Apr 20260.87769
30 Apr 20260.91812
5 May 20260.92296
13 May 20260.9112
2 Jun 20260.91526
15 Jun 20260.98871
24 Jul 20260.97878
9 Sep 20260.97993
18 Sep 20260.98064

33 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 0.98064Published · Public PoC2026-01-21CISA KEV2026-01-26Index as of2026-09-18

Listed by CISA 5 days after it published, exploit probability more than doubled between 2026-01-25 and 2026-01-27 (0.00488 → 0.34452) and the record had been public for 7 months when this index was last written.

Published 2026-01-21 receipt · Public PoC 2026-01-21 receipt · CISA KEV 2026-01-26 receipt · Index as of 2026-09-18 derived

The pattern, elsewhere

This record is one instance of CWE-88, improper neutralization of argument delimiters in a command ('argument injection'). The index holds 455 prior instances of this class, 4 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2016-10033matches 8 of 8KEV listed · 2016receipt
CVE-2024-41710matches 7 of 8KEV listed · 2024receipt
CVE-2022-36804 · Atlassian Bitbucket Servermatches 7 of 9KEV listed · 2022receipt
CVE-2026-86060 · Mikrotik RouterOSonly 1 attribute comparableKEV listed · 2026receipt

"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

455 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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