What is CVE-2018-25339?

CVE-2018-25339 is a high-severity vulnerability in Bylancer Zechat, classified under SQL Injection. CVSS score: 8.2/10. Published 2026-05-17.

How severe is CVE-2018-25339?

High severity. CVSS v3 base score is 8.2 out of 10.

SQL Injection in Bylancer Zechat

CVE-2018-25339

Zechat 1.5 contains a SQL injection vulnerability in the v parameter that allows unauthenticated attackers to extract database information using time-based blind techniques. Attackers can exploit the v parameter with sleep-based blind inje…

Vulnerability class: SQL Injection

EPSS: 0.001 (24.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Bylancer Zechat — versions 1.5

Weakness classification (CWE)

CWE-89 — SQL Injection

References

disclosure@vulncheck.com (product)
disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2018-25339?: CVE-2018-25339 is a high-severity vulnerability in Bylancer Zechat, classified under SQL Injection. CVSS score: 8.2/10. Published 2026-05-17.
How severe is CVE-2018-25339?: High severity. CVSS v3 base score is 8.2 out of 10.