Exploited vulnerabilities / CVE-2017-7921
Confirmed exploited · authentication bypass · Hikvision Multiple ProductsCVE-2017-7921
Hikvision Multiple Products authentication bypass, confirmed exploited in the wild.
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.
| CISA's name for it | Hikvision Multiple Products Improper Authentication Vulnerability |
|---|---|
| Vendor and product | Hikvision · Multiple Products |
| Type | authentication bypass · CWE-287 |
| Exploited | Confirmed by CISA listed 5 March 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 26 March 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | www.hikvision.com ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor fix and restart the affected service.
Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant.
Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.
| CISA's required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
|---|
Know before someone else finds it
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CVE-2017-7921 in short
Is CVE-2017-7921 being exploited?
Yes. CISA added CVE-2017-7921 to its Known Exploited Vulnerabilities catalogue on 5 March 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2017-7921?
US federal agencies must remediate it by 26 March 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2017-7921 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 100%, the 99th percentile of every CVE it scores.
How do I fix CVE-2017-7921?
Apply the vendor fix and restart the affected service. Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant. Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.