vciy

CVE-2024-4030

INDEX BUILT · 2026-09-20

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tempfile.mkdtemp() may be readable and writeable by all users on Windows

CVE-2024-40303 of 4 sources documented this
unranked

No rank

rank@v1 withholds a number for this record

nothing this rule scores is held for this record, so there is no ordering to state. That is a fact about the sources, not a finding about the software.

Hindsight · the state

0.00303EPSSNOT IN KEVas of 2026-09-20
Severitynot scored
Harmnot stated
Exploitationnone in held sources
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2024-05-08, 798 days at 0.00, as of 2026-07-15. arc-rules@v1

Foresight · where to check next

Acronis BackupVMware vCenterCVE-2013-06324030

This record is one instance of CWE-276, incorrect default permissions. The index holds 1565 prior instances of this class, 3 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 signal

Running Python Software Foundation CPython? 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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ReachNo CVSS vector in held sources, so no reach or impact can be stated.
Weakness classCWE-276 Incorrect Default Permissionsreceipt
Published consequencesCWE-276: Confidentiality, Integrity: Read Application Data, Modify Application Data[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in3.8.20; 3.9.20; 3.10.15; 3.11.10; 3.12.4; 3.13.0b1receipt
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

Exploit probability0.00303 · top 77% of all CVEsreceipt
Assigned byPSFreceipt
Recorded changes21 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productPython Software Foundation CPythonreceipt
Fixed in3.8.20; 3.9.20; 3.10.15; 3.11.10; 3.12.4; 3.13.0b1receipt

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

On Windows a directory returned by tempfile.mkdtemp() would not always have permissions set to restrict reading and writing to the temporary directory by other users, instead usually inheriting the correct permissions from the default location. Alternate configurations or users without a profile directory may not have the intended permissions. If you’re not using Windows or haven’t changed the temporary directory location then you aren’t affected by this vulnerability. On other platforms the returned directory is consistently readable and writable only by the current user. This issue was caused by Python not supporting Unix permissions on Windows. receipt

Read the rest of the CNA's description

The fix adds support for Unix “700” for the mkdir function on Windows which is used by mkdtemp() to ensure the newly created directory has the proper permissions.

NVD's analysis a second authority

weakness
CWE-276
also scored by
7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

check it yourself mail.python.org github.com github.com github.com github.com github.com +9 morereceipt

Movement the material steps

8 May 20240.00045
17 Mar 20250.00049 · scoring model v2025.03.14
15 Jun 20260.003 · scoring model v2026.06.15
15 Jul 20260.00303
Show all 21 observations
8 May 20240.00045
14 Jun 20240.00046
17 Mar 20250.00049
29 Mar 20250.00121
30 Mar 20250.00049
15 Apr 20250.00014
15 Jun 20250.0002
22 Jul 20250.00021
26 Jul 20250.00019
4 Aug 20250.00018
16 Aug 20250.00019
21 Aug 20250.00018
26 Sep 20250.00025
18 Nov 20250.00051
21 Nov 20250.00026
30 Nov 20250.00025
26 May 20260.0003
29 May 20260.00031
11 Jun 20260.0003
15 Jun 20260.003
15 Jul 20260.00303

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 0.00303Published2024-05-07Index as of2026-07-15

The record had been public for 2 years, 2 months when this index was last written.

Published 2024-05-07 receipt · Index as of 2026-07-15 derived

The pattern, elsewhere

This record is one instance of CWE-276, incorrect default permissions. The index holds 1565 prior instances of this class, 3 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2026-87886 · Acronis Backup plugin for cPanel & WHMonly 1 attribute comparableKEV listed · 2026receipt
CVE-2022-22948 · VMware vCenter Server and VMware Cloud…only 1 attribute comparableKEV listed · 2022receipt
CVE-2013-0632nothing comparable heldKEV listed · 2013receipt

"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

1565 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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