CVE-2020-27747

MEDIUM

Click Studios Passwordstate 8.9 Build 8973 - Unauthenticated Brute Force Attack via Mobile PIN Code

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-27747. PoCs published by jet-pentest.

AI-analyzed exploit summary This repository contains a writeup describing CVE-2020-27747, a brute force vulnerability in Click Studios Passwordstate 8.9 (Build 8973) due to improper restriction of excessive authentication attempts on the mobile login page. The vulnerability allows remote attackers to brute force a 4-digit PIN code.

Description

An issue was discovered in Click Studios Passwordstate 8.9 (Build 8973).If the user of the system has assigned himself a PIN code for entering from a mobile device using the built-in generator (4 digits), a remote attacker has the opportunity to conduct a brute force attack on this PIN code. As result, remote attacker retrieves all passwords from another systems, available for affected account.

Exploits (1)

nomisec WRITEUP 1 stars
by jet-pentest · poc
https://github.com/jet-pentest/CVE-2020-27747

This repository contains a writeup describing CVE-2020-27747, a brute force vulnerability in Click Studios Passwordstate 8.9 (Build 8973) due to improper restriction of excessive authentication attempts on the mobile login page. The vulnerability allows remote attackers to brute force a 4-digit PIN code.

Classification
Writeup 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Click Studios Passwordstate 8.9 (Build 8973)
No auth needed
Prerequisites: User has assigned a 4-digit PIN code for mobile login
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Product, Vendor Advisory x_refsource_misc
https://www.clickstudios.com.au/
Third Party Advisory x_refsource_misc
https://github.com/jet-pentest/CVE-2020-27747

Scores

CVSS v3 6.8
EPSS 0.0109
EPSS Percentile 61.0%
Attack Vector PHYSICAL
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-307
Status published
Products (1)
clickstudios/passwordstate 8.9 build_8973
Published Oct 29, 2020
Tracked Since Feb 18, 2026