CVE-2018-25339 — Zechat 1.5 SQL Injection via v parameter (time-based blind)

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HIGH

Zechat 1.5 SQL Injection via v parameter (time-based blind)

Published May 17, 2026

8.8

HIGH

CVSS 4.0

EPSS 0.27%

Description

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 injection to confirm vulnerability and extract data.

Affected products

Vendor Bylancer Product Zechat Default
n/a
- Version
  1.5
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Bylancer

Zechat

n/a

Version	Status	Constraints
1.5	affected	-

Remediation

No remediation recorded yet.

Metrics

0.27% 0.00267

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.00267

Score over time

May–Oct 2026

EPSS v4
EPSS v5

Percentile over time

EPSS v4
EPSS v5

Table of values (3 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	0.27% (0.00267)	17.10th	v5 (v2026.06.15)
Jun 15, 2026	0.27% (0.00267)	18.07th	v5 (v2026.06.15)
May 18, 2026	0.07% (0.00065)	20.15th	v4 (v2025.03.14)

Weaknesses (1)

CWE-89

SQL Injection

References (3)

https://bylancer.com
product
https://www.exploit-db.com/exploits/44685
exploit
https://www.vulncheck.com/advisories/zechat-sql-injection-via-v-parameter-time-based-blind
third-party-advisory

Link	Providers	Tags
https://bylancer.com		product
https://www.exploit-db.com/exploits/44685		exploit
https://www.vulncheck.com/advisories/zechat-sql-injection-via-v-parameter-time-based-blind		third-party-advisory