CVE-2023-38950KEV · OVERDUE

ZKTeco BioTime Path Traversal Vulnerability

High · published August 3, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 99.8th percentile for exploit probability.

502
days past CISA
deadline
CVSS v3.1
7.5
EPSS
92%
Percentile
99.8
In the wild
Confirmed
What it is

🚨 A sneaky path traversal vulnerability lurks in ZKTeco BioTime v8.5.5, letting attackers read any file they fancy with just a crafted payload! ⚡ Think of it like a delivery driver who can take any package they see instead of just the one meant for them — if they follow the wrong instructions, they can peek inside your entire warehouse of secrets! This means an attacker could potentially access sensitive files on your server without breaking a sweat, exposing private data and putting your organization at serious risk. The consequences could be absolutely devastating, leading to data breaches and your reputation taking a nosedive!

Put simply

Think of it like a delivery driver who can take any package they see instead of just the one meant for them — if they follow the wrong instructions, they can peek inside your entire warehouse of secrets! The vulnerability arises from a lack of proper validation in the iclock API, allowing unauthenticated users to exploit path traversal to access arbitrary files on the server.

What to do

This means an attacker could potentially access sensitive files on your server without breaking a sweat, exposing private data and putting your organization at serious risk. The consequences could be absolutely devastating, leading to data breaches and your reputation taking a nosedive! To protect yourself, urgently upgrade to version 9.0.120240617.19506 or later. Additionally, consider implementing proper input validation to further safeguard against similar attacks. Don't delay on this—your data security depends on it! You've got this! With these steps, you're well on your way to locking down your system and earning that security hero status! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.92468 · 99.8th percentile
Published
2023-08-03T00:00Z
KEV added
2025-05-19 · due 2025-06-09
EPSS history
Timeline
  • 19 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 9
    kev
  • 03 AUG 00:00Z
    A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows unauthenticated attackers to read arbitrary files via supplying a crafted…
    cvelistv5