CVE-2017-7921 Hikvision Multiple Products: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Mar 26, 2026
What to do
- Install Hikvision's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- Hikvision Multiple Products Improper Authentication Vulnerability
- Product
- Hikvision Multiple Products
- CISA description
- Multiple Hikvision products contain an improper authentication vulnerability that could allow a malicious user to escalate privileges on the system and gain access to sensitive information.
- Type of flaw
- Login or permission bypass (CWE-287)
- Confirmed exploited
- Mar 5, 2026
- US federal patch deadline
- Mar 26, 2026
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Answering about CVE-2017-7921 ·
Questions about CVE-2017-7921
Is CVE-2017-7921 being exploited?
Yes. CISA added CVE-2017-7921 to its Known Exploited Vulnerabilities catalog on Mar 5, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2017-7921?
Install Hikvision's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2017-7921?
Only if you use Hikvision Multiple Products. This one is aimed at devices or apps of the kind people own.