vciy

CVE-2023-0386

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 flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s…

CVE-2023-03864 of 4 sources documented this
75

rank 75 = 40 + 20 + 1 + 8 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.07880 · CISA KEV listed  ·  without this subject the record ranks 35

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.8, from NVD  ·  without this subject the record ranks 55

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-11-21  ·  without this subject the record ranks 74

How much of the world it touches

NVD CPE configurations

11 products in the CPE ranges  ·  without this subject the record ranks 67

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 69

Hindsight · the state

0.0788EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseunaffected versions publishedreceipt
Movementthreshold crossedreceipt
RISING10Risen from 0.00042 to 0.0788 across 90 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 Kernel? 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

Watch Kernel

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.

Reachneeds local access · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-282 Improper Ownership Managementreceipt
Published consequencesCWE-282: Access Control: Gain Privileges or Assume Identitycwe-consequences@4.20
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchkernel 5.15.91; kernel 6.1.9receipt
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 2025-07-08receipt
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
BOD 26-04 deadlineNot worked out yet. CISA scores every KEV entry for the directive, and this index has not loaded its scoring for this one.
Published to CISA KEV818 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2025-06-17.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 19 public repositories2023-04-20receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2025-06-17receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD7.8 HIGHreceipt
Exploit probability0.0788 · top 5% of all CVEsreceipt
Blast breadth3 products across 3 vendorsderived
Assigned byredhatreceipt
Recorded changes104 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productKernelreceipt
Published rangeslinux kernel >= 5.11 < 5.15.91; linux kernel >= 5.16 < 6.1.9; linux kernel 6.2-rc1; linux kernel 6.2-rc2receipt
Show all 11 published ranges
linux kernel >= 5.11 < 5.15.91
linux kernel >= 5.16 < 6.1.9
linux kernel 6.2-rc1
linux kernel 6.2-rc2
linux kernel 6.2-rc3
linux kernel 6.2-rc4
linux kernel 6.2-rc5
debian linux 10.0
canonical ubuntu linux 18.04
canonical ubuntu linux 20.04
canonical ubuntu linux 22.04

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$393,000over the next 30 days, if this record is yours
Movement-$105,000on 2026-06-06, the last material move, 2 months before this reading
Basisassumeda published average, not your estate

$393,000 = $4.99M incident cost x 1 exposure x 0.0788 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.

What it is stated by the CNA

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system. receipt

NVD's analysis a second authority

severity
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-282
affected versions
linux kernel >= 5.11 < 5.15.91; linux kernel >= 5.16 < 6.1.9; linux kernel 6.2-rc1; and 8 more, listed in full below
also scored by
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself git.kernel.org security.netapp.com debian.org lists.debian.org packetstormsecurity.com lists.debian.org receipt

Dated events

2025-03-17EPSS moved 0.00 to 0.082025-06-17Added to CISA KEV2025-07-08CISA remediation due2026-06-15EPSS moved 0.49 to 0.08

Movement the material steps

23 Mar 20230.00042
17 Mar 20250.08433 · scoring model v2025.03.14
19 Mar 20250.17625 · crossed 0.10
20 Mar 20250.08433 · crossed 0.10
26 Mar 20250.17625 · crossed 0.10
18 Jun 20250.55442 · crossed 0.50
16 Jul 20250.47966 · crossed 0.50
13 Aug 20250.56223 · crossed 0.50
18 Nov 20250.48467 · crossed 0.50
21 Nov 20250.58243 · crossed 0.50
14 Apr 20260.49157 · crossed 0.50
21 Apr 20260.51056 · crossed 0.50
23 May 20260.48665 · crossed 0.50
1 Jun 20260.50619 · crossed 0.50
6 Jun 20260.48523 · crossed 0.50
15 Jun 20260.0788 · crossed 0.10 · scoring model v2026.06.15

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

Show all 90 observations
23 Mar 20230.00042
27 Sep 20240.00226
8 Jan 20250.00188
6 Mar 20250.00228
17 Mar 20250.08433
19 Mar 20250.17625
20 Mar 20250.08433
26 Mar 20250.17625
9 Apr 20250.19037
7 May 20250.22724
15 May 20250.2318
19 May 20250.22724
2 Jun 20250.23063
18 Jun 20250.55442
19 Jun 20250.53768
20 Jun 20250.56337
22 Jun 20250.56789
25 Jun 20250.5784
26 Jun 20250.57628
8 Jul 20250.5522
9 Jul 20250.50992
16 Jul 20250.47966
22 Jul 20250.47375
11 Aug 20250.45618
12 Aug 20250.47375
13 Aug 20250.56223
16 Aug 20250.59747
17 Aug 20250.5846
18 Aug 20250.60101
19 Aug 20250.6233
21 Aug 20250.59432
27 Aug 20250.58895
16 Sep 20250.59432
19 Sep 20250.58895
1 Oct 20250.55792
5 Oct 20250.5635
18 Oct 20250.55792
22 Oct 20250.59236
27 Oct 20250.62194
28 Oct 20250.59236
4 Nov 20250.58698
5 Nov 20250.60103
14 Nov 20250.59219
15 Nov 20250.58543
18 Nov 20250.48467
21 Nov 20250.58243
23 Nov 20250.57351
30 Nov 20250.6034
10 Dec 20250.5981
15 Dec 20250.58617
18 Dec 20250.61552
27 Dec 20250.64394
28 Dec 20250.61552
31 Dec 20250.58617
1 Jan 20260.59949
15 Jan 20260.60809
16 Jan 20260.5784
25 Jan 20260.56944
2 Feb 20260.59837
17 Feb 20260.58087
18 Feb 20260.61323
22 Feb 20260.55925
25 Feb 20260.61564
3 Mar 20260.59696
7 Mar 20260.59162
21 Mar 20260.59023
23 Mar 20260.51147
25 Mar 20260.50565
31 Mar 20260.52413
1 Apr 20260.51992
7 Apr 20260.54874
8 Apr 20260.54224
9 Apr 20260.56414
10 Apr 20260.52388
14 Apr 20260.49157
20 Apr 20260.46885
21 Apr 20260.51056
24 Apr 20260.5298
27 Apr 20260.57423
28 Apr 20260.54322
12 May 20260.53312
13 May 20260.59468
14 May 20260.54236
22 May 20260.58284
23 May 20260.48665
24 May 20260.48236
26 May 20260.48665
1 Jun 20260.50619
6 Jun 20260.48523
15 Jun 20260.0788

90 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 0.0788Published2023-03-22Public PoC2023-04-20CISA KEV2025-06-17Index as of2026-09-04

Listed by CISA 818 days after it published, exploit probability more than doubled between 2025-03-17 and 2025-03-19 (0.08433 → 0.17625) and the record had been public for 3 years, 5 months when this index was last written.

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

Published 2023-03-22 receipt · Public PoC 2023-04-20 receipt · CISA KEV 2025-06-17 receipt · Index as of 2026-09-04 derived

Siblings and hubs

Records related to this one

Browse the index from here

These are index-wide views, not findings about CVE-2023-0386.

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.