vciy

CVE-2018-10933

INDEX BUILT · 2026-09-20

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A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4

CVE-2018-109334 of 4 sources documented this
61

rank 61 = 29 + 23 + 1 + 8 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.91789  ·  without this subject the record ranks 32

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.1, from NVD  ·  without this subject the record ranks 38

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-10-01  ·  without this subject the record ranks 60

How much of the world it touches

NVD CPE configurations

12 products in the CPE ranges  ·  without this subject the record ranks 53

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 61

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.04Mover the next 30 days, if this record is yours
Movement+$2.66Mon 2025-11-21, the last material move, 6 months before this reading
Basisassumeda published average, not your estate

$4.04M = $4.99M incident cost x 0.8814887365328109 exposure x 0.91789 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

0.91789EPSSNOT IN KEVas of 2026-09-20
Severity9.1 CRITICALreceipt
Harmunauthenticated · networkreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseunaffected versions publishedreceipt
Movementthreshold crossedreceipt
RISING10Risen from 0.457 to 0.91789 across 68 observations. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running [UNKNOWN] libssh? 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.

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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 and integrity lossreceipt
Scored fromCVSS v3.0 · the CNA's vectorreceipt
Weakness classCWE-592 DEPRECATED: Authentication Bypass Issuesreceipt
Published consequencesMITRE publishes no common consequences for this weakness.[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchlibssh 0.7.6; libssh 0.8.4receipt
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: Proof-of-concept published · 38 public repositories, 2018-10-17.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 38 public repositories2018-10-17receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.1 CRITICALreceipt
CVSS, NVD9.1 CRITICALreceipt
Exploit probability0.91789 · top 0.19% of all CVEsreceipt
Blast breadth6 products across 6 vendorsderived
Assigned byredhatreceipt
Recorded changes71 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected product[UNKNOWN] libsshreceipt
Published rangeslibssh >= 0.6.0 < 0.7.6; libssh >= 0.8.0 < 0.8.4; canonical ubuntu linux 14.04; canonical ubuntu linux 16.04receipt
Show all 12 published ranges
libssh >= 0.6.0 < 0.7.6
libssh >= 0.8.0 < 0.8.4
canonical ubuntu linux 14.04
canonical ubuntu linux 16.04
canonical ubuntu linux 18.04
canonical ubuntu linux 18.10
debian linux 8.0
debian linux 9.0
redhat enterprise linux 7.0
netapp oncommand unified manager >= 7.3
netapp oncommand unified manager >= 9.4
oracle mysql workbench <= 8.0.13

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 interaction[UNKNOWN] libsshCWE-592 weaknessConfidentiality and integrity lossC:H / I:Hexploits CWE-592data compromise

What it is stated by the CNA

A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access. receipt

NVD's analysis a second authority

severity
9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
weakness
CWE-592; CWE-287
affected versions
libssh >= 0.6.0 < 0.7.6; libssh >= 0.8.0 < 0.8.4; canonical ubuntu linux 14.04; and 9 more, listed in full below
also scored by
[email protected] 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

check it yourself usn.ubuntu.com oracle.com usn.ubuntu.com debian.org exploit-db.com libssh.org +5 morereceipt

Dated events

2022-02-04EPSS moved 0.46 to 0.922023-03-07EPSS moved 0.92 to 0.052026-06-15EPSS moved 0.75 to 0.92

Movement the material steps

14 Apr 20210.457
4 Feb 20220.92171 · crossed 0.50 and 0.90
7 Mar 20230.0529 · crossed 0.10 and 0.50 and 0.90 · scoring model v2023.03.01
29 Oct 20230.10518 · crossed 0.10
17 Dec 20240.25948
17 Mar 20250.79855 · crossed 0.50 · scoring model v2025.03.14
18 Nov 20250.17757 · crossed 0.50
21 Nov 20250.78329 · crossed 0.50
15 Jun 20260.91789 · crossed 0.90 · scoring model v2026.06.15

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

Show all 68 observations
14 Apr 20210.457
4 Feb 20220.92171
7 Mar 20230.0529
8 Mar 20230.05290
2 Jun 20230.06345
14 Jun 20230.07236
8 Jul 20230.07556
8 Sep 20230.06824
26 Sep 20230.07938
11 Oct 20230.09047
29 Oct 20230.10518
15 Nov 20230.11164
4 Dec 20230.11711
22 Dec 20230.12494
26 Jan 20240.15428
9 Mar 20240.15306
18 Apr 20240.14233
5 Jun 20240.13710
26 Sep 20240.13609
17 Dec 20240.25948
20 Jan 20250.22171
17 Mar 20250.79855
20 Mar 20250.76526
24 Mar 20250.79577
10 Apr 20250.8088
11 Apr 20250.79577
1 May 20250.8088
4 May 20250.79577
13 May 20250.8088
14 May 20250.79577
1 Jun 20250.8088
4 Jun 20250.79577
8 Jun 20250.79855
21 Jun 20250.79577
1 Jul 20250.8088
5 Jul 20250.79577
16 Jul 20250.79855
28 Jul 20250.79577
1 Aug 20250.8088
2 Aug 20250.80698
4 Aug 20250.79379
16 Aug 20250.7593
1 Sep 20250.77515
5 Sep 20250.7593
1 Oct 20250.79731
4 Oct 20250.78329
27 Oct 20250.7593
28 Oct 20250.78329
1 Nov 20250.79731
4 Nov 20250.78329
18 Nov 20250.17757
21 Nov 20250.78329
1 Dec 20250.79731
4 Dec 20250.78329
18 Dec 20250.78627
20 Dec 20250.78329
27 Dec 20250.7593
28 Dec 20250.78329
1 Jan 20260.79731
4 Jan 20260.78329
1 Feb 20260.79731
4 Feb 20260.78329
1 Mar 20260.79731
4 Mar 20260.78329
21 Mar 20260.78627
30 Mar 20260.78329
10 Jun 20260.74906
15 Jun 20260.91789

68 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 0.91789Published · Public PoC2018-10-17Index as of2026-06-15

Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.17757 → 0.78329) and the record had been public for 7 years, 7 months when this index was last written.

Published 2018-10-17 receipt · Public PoC 2018-10-17 receipt · Index as of 2026-06-15 derived

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