CVE-2017-7921KEV · OVERDUECWE-287

Hikvision Multiple Products Improper Authentication Vulnerability

Critical · published May 6, 2017

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.

211
days past CISA
deadline
CVSS v3.1
9.8
EPSS
100%
Percentile
100.0
In the wild
Confirmed
What it is

🚨 An improper authentication issue lurking in Hikvision devices allows sneaky privilege escalation! 😱 Think of it like a hotel where anyone can walk through the lobby and access rooms without ever showing a keycard. The front desk just isn't checking who should really have access! A malicious user could stroll right into sensitive areas of your system, potentially accessing confidential information and wreaking havoc. Imagine an intruder gaining control of your security cameras or sensitive data — it’s absolutely devastating!

Put simply

Think of it like a hotel where anyone can walk through the lobby and access rooms without ever showing a keycard. The front desk just isn't checking who should really have access! This vulnerability arises when Hikvision devices do not correctly authenticate users, making it possible for unauthorized individuals to escalate their privileges and access restricted areas on the system.

What to do

A malicious user could stroll right into sensitive areas of your system, potentially accessing confidential information and wreaking havoc. Imagine an intruder gaining control of your security cameras or sensitive data — it’s absolutely devastating! To safeguard against this risk, immediately patch your devices to versions V5.4.4 or later. Additionally, ensure strong user authentication practices and limit access to sensitive systems as much as possible. You've got this! Follow these steps, and you'll be on your way to securing your system in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.99998 · 100.0th percentile
Weakness
CWE-287 · Improper Authentication
Published
2017-05-06T00:00Z
KEV added
2026-03-05 · due 2026-03-26
EPSS history
Timeline
  • 05 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 26
    kev
  • 06 MAY 00:00Z
    An Improper Authentication issue was discovered in Hikvision DS-2CD2xx2F-I Series V5.2.0 build 140721 to V5.4.0 build 160530, DS-2CD2xx0F-I Series V5.2.0 build…
    cvelistv5