What is CVE-2025-45766?

CVE-2025-45766 is a high-severity vulnerability in Pocoproject Poco, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.0/10. Published 2025-08-06.

How severe is CVE-2025-45766?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2025-45766 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Pocoproject Poco

CVE-2025-45766

poco v1.14.1-release was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.001 (3.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Pocoproject Poco — versions 1.14.1
N/a — versions n/a

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

cve@mitre.org (Product)
cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-45766?: CVE-2025-45766 is a high-severity vulnerability in Pocoproject Poco, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.0/10. Published 2025-08-06.
How severe is CVE-2025-45766?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2025-45766 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.