CVE-2024-4030tempfile.mkdtemp() may be readable and writeable by all users on Windows
- 7.1HighCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 77% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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. 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.
Timeline
ID reserved
By PSF
- 15 days later
· 15 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Deferred | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
Python Software Foundation · CPython
- affected < 3.8.20
- affected 3.9.0 – < 3.9.20
- affected 3.10.0 – < 3.10.15
- affected 3.11.0 – < 3.11.10
- affected 3.12.0 – < 3.12.4
- affected 3.13.0a1 – < 3.13.0b1
References
References15
- https://mail.python.org/archives/list/[email protected]/thread/PRGS5OR3N3PNPT4BMV2VAGN5GMUI5636/ (opens in a new tab)vendor-advisoryx_transferred
- https://github.com/python/cpython/issues/118486 (opens in a new tab)issue-trackingx_transferred
- https://github.com/python/cpython/commit/81939dad77001556c527485d31a2d0f4a759033e (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/8ed546679524140d8282175411fd141fe7df070d (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/35c799d79177b962ddace2fa068101465570a29a (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/5130731c9e779b97d00a24f54cdce73ce9975dfd (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/66f8bb76a15e64a1bb7688b177ed29e26230fdee (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/6d0850c4c8188035643586ab4d8ec2468abd699e (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/91e3669e01245185569d09e9e6e11641282971ee (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/94591dca510c796c7d40e9b4167ea56f2fdf28ca (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/c8f868dc52f98011d0f9b459b6487920bfb0ac4d (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/d86b49411753bf2c83291e3a14ae43fefded2f84 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/e1dfa978b1ad210d551385ad8073ec6154f53763 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/eb29e2f5905da93333d1ce78bc98b151e763ff46 (opens in a new tab)patchx_transferred
- https://security.netapp.com/advisory/ntap-20240705-0005/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-32595 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-4030)Record last updated .