TI-2023-06540 Aliases CVE-2023-7152 GHSA-jpcc-65j8-6q37

MicroPython modselect.c poll_set_add_fd use after free

MEDIUM 44CWE-416Published 2023-12-29 · Updated 2025-02-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A vulnerability, which was classified as critical, has been found in MicroPython 1.21.0/1.22.0-preview. Affected by this issue is the function poll_set_add_fd of the file extmod/modselect.c. The manipulation leads to use after free. The exploit has been disclosed to the public and may be used. The patch is identified as 8b24aa36ba978eafc6114b6798b47b7bfecdca26. It is recommended to apply a patch to fix this issue. VDB-249158 is the identifier assigned to this vulnerability.

Why it matters now

EPSS 0.00892 59th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	MicroPython	1.21.0; 1.22.0-preview	—	No fix listed	CNA

MicroPython Vendor— Affected 1.21.0; 1.22.0-preview Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:micropython:micropython:1.21.0:::::::*	1.21.0	Vulnerable	Micropython
cpe:2.3:a:micropython:micropython:1.22.0:preview::::::	1.22.0 preview	Vulnerable	Micropython

cpe:2.3:a:micropython:micropython:1.21.0:*:*:*:*:*:*:* Versions 1.21.0 Vulnerable ·Micropython
cpe:2.3:a:micropython:micropython:1.22.0:preview:*:*:*:*:*:* Versions 1.22.0 preview Vulnerable ·Micropython

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2023-7152
2026-10-03 Alias added: GHSA-jpcc-65j8-6q37

References

Exploit 1

https://github.com/micropython/micropython/issues/12887

Patch 1

https://github.com/jimmo/micropython/commit/8b24aa36ba978eafc6114b6798b47b7bfecdca26

Other 3

TI-2024-08308 MicroPython objint.c mpz_as_bytes heap-based overflow CVSS 4.0MEDIUM 6.9
TI-2024-08306 MicroPython VFS Unmount vfs.c mp_vfs_umount heap-based overflow CVSS 4.0MEDIUM 6.9
TI-2024-08307 MicroPython objarray.c use after free CVSS 4.0MEDIUM 6.3
TI-2026-01655 micropython runtime.c mp_import_all memory corruption CVSS 4.0MEDIUM 4.8
TI-2023-06546 MicroPython objslice.c slice_indices heap-based overflow CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences