What is CVE-2019-5065?

CVE-2019-5065 is a medium-severity vulnerability in Blynk Blynk-Library, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2019-09-05.

How severe is CVE-2019-5065?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Out-of-bounds Read in Blynk Blynk-Library

CVE-2019-5065

An exploitable information disclosure vulnerability exists in the packet-parsing functionality of Blynk-Library v0.6.1. A specially crafted packet can cause an unterminated strncpy, resulting in information disclosure. An attacker can send a packet to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published 2019-09-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.019 (78.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Blynk Blynk-Library — versions 0.6.1
Blynck Inc — versions Blynk Blynk-Library v0.6.1

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

talosintelligence.com/vulnerability_reports/TALOS-2019-0854 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-5065?: CVE-2019-5065 is a medium-severity vulnerability in Blynk Blynk-Library, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2019-09-05.
How severe is CVE-2019-5065?: Medium severity. CVSS v3 base score is 5.3 out of 10.