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CVE Record
[ CRITICAL ]CVE-2017-7921

Hikvision Multiple Products Improper Authentication Vulnerability

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.

Vendor
Hikvision
Product
Multiple Products
CVSS
9.8
EPSS (exploit probability)
100.0%
Status
kev
CISA patch-by (BOD 22-01)
Added to KEV

Is CVE-2017-7921 being exploited?

Yes. CISA added CVE-2017-7921 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.

FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 100.0% (scored October 14, 2026).

Catalog snapshot 2026-10-23. Full cross-catalog view: /kev-comparison

CVE-2017-7921 timeline

  1. Published to NVD
  2. Added to CISA KEV+3225d

Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON

What to do

CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.

CVE / VulnerabilitySeverityCVSSEPSSAdded to KEV
CVE-2021-36260
Hikvision Improper Input Validation
[ CRITICAL ]9.899.9%