What is CVE-2025-6375?

CVE-2025-6375 is a low-severity vulnerability in Pocoproject Poco, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2025-06-21.

How severe is CVE-2025-6375?

Low severity. CVSS v3 base score is 3.3 out of 10.

NULL pointer dereference in Pocoproject Poco

CVE-2025-6375

A vulnerability was found in poco up to 1.14.1. It has been rated as problematic. Affected by this issue is the function MultipartInputStream of the file Net/src/MultipartReader.cpp. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.14.2 is able to address this issue. The patch is identified as 6f2f85913c191ab9ddfb8fae781f5d66afccf3bf. It is recommended to upgrade the affected component.

Published 2025-06-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Pocoproject Poco
Poco — versions 1.14.0, 1.14.1, 1.14.2

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/pocoproject/poco/issues/4915 (issue-tracking, Exploit, Patch, exploit, Issue Tracking)
github.com/user-attachments/files/19524599/poco_crash.txt (Exploit, exploit)
github.com/pocoproject/poco/commit/6f2f85913c191ab9ddfb8fae781f5d66afccf3bf (Patch, exploit, patch)
github.com/pocoproject/poco/releases/tag/poco-1.14.2-release (exploit, Release Notes, patch)

Frequently asked questions

What is CVE-2025-6375?: CVE-2025-6375 is a low-severity vulnerability in Pocoproject Poco, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2025-06-21.
How severe is CVE-2025-6375?: Low severity. CVSS v3 base score is 3.3 out of 10.