What is CVE-2017-7921?

CVE-2017-7921 is a critical-severity vulnerability in Hikvision Ds-2cd2032-i, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-05-06.

How severe is CVE-2017-7921?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-7921 known to be exploited?

Yes. CVE-2017-7921 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-03-05), indicating it is being actively exploited. 91 public proof-of-concept repositories are indexed.

Auth bypass in Hikvision Ds-2cd2032-i

CVE-2017-7921

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 140721 to V5.4.0 Build 160401, DS-2CD2xx2FWD Series V5.3.1 build 150410 to V5.4…

Vulnerability class: Broken Authentication

EPSS: 1.000 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-03-05. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-03-26.

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.

Public proof-of-concept exploits

References

ics-cert@hq.dhs.gov (US Government Resource, Third Party Advisory, x_refsource_MISC)
ics-cert@hq.dhs.gov (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
ics-cert@hq.dhs.gov (x_refsource_MISC, Broken Link)
ics-cert@hq.dhs.gov (Patch, x_refsource_MISC, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2017-7921?: CVE-2017-7921 is a critical-severity vulnerability in Hikvision Ds-2cd2032-i, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-05-06.
How severe is CVE-2017-7921?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-7921 known to be exploited?: Yes. CVE-2017-7921 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-03-05), indicating it is being actively exploited. 91 public proof-of-concept repositories are indexed.