CVE-2017-7921

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 1.000 · 100 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 27 exploits · functional

Likely / severe?

100.0% (100th) EPSS

CVSS 7.5 · high

Is it mine?

80 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

added 2026-03-05remediate by 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.

EPSS · scored 2026-10-27

Hikvision Multiple Products Improper Authentication Vulnerability

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 V5.4.4 Build 161125, DS-2CD4x2xFWD Series V5.2.0 build 140721 to V5.4.0 Build 160414, DS-2CD4xx5 Series V5.2.0 build 140721 to V5.4.0 Build 160421, DS-2DFx Series V5.2.0 build 140805 to V5.4.5 Build 160928, and DS-2CD63xx Series V5.0.9 build 140305 to V5.3.5 Build 160106 devices. The improper authentication vulnerability occurs when an application does not adequately or correctly authenticate users. This may allow a malicious user to escalate his or her privileges on the system and gain access to sensitive information.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedDS- 2CD4x2xFWD Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2CD2xx0F-I Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2CD2xx2F-I Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2CD2xx2FWD Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2CD4xx5 Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2CD63xx Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
FixedDS-2DFx Seriescisa_csaf_ot
DS-2CD2xx2F-I Series: V5.4.5 build 170123 and later
http://www.hikvision.com/us/about_10805.html
MitigationDS- 2CD4x2xFWD Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2CD2xx0F-I Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2CD2xx2F-I Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2CD2xx2FWD Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2CD4xx5 Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2CD63xx Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.
MitigationDS-2DFx Seriescisa_csaf_ot
For Chinese-language domestic cameras, Hikvision also provides on-site tours or remote support in addition to the updated firmware listed above.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–10

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.010criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.110criticalAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287USCWE-287US

exploits (27)

Public proof-of-concept and weaponised exploit code.

affected products (80)

Products and version ranges known to be affected.

DS- 2CD4x2xFWD Series: V5.2.0 build 140721 to V5.4.0 Build 160414all versionscisa_csaf_otUS
DS-2CD2xx0F-I Series: V5.2.0 build 140721 to V5.4.0 Build 160401all versionscisa_csaf_otUS
DS-2CD2xx2F-I Series: V5.2.0 build 140721 to V5.4.0 build 160530all versionscisa_csaf_otUS
DS-2CD2xx2FWD Series: V5.3.1 build 150410 to V5.4.4 Build 161125all versionscisa_csaf_otUS
DS-2CD4xx5 Series: V5.2.0 build 140721 to V5.4.0 Build 160421all versionscisa_csaf_otUS
DS-2CD63xx Series: V5.0.9 build 140305 to V5.3.5 Build 160106all versionscisa_csaf_otUS
DS-2DFx Series: V5.2.0 build 140805 to V5.4.5 Build 160928all versionscisa_csaf_otUS
Hikvision DS- 2CD4x2xFWD Series5.2.0 build 140721 | → 5.4.0 Build 160414cisa_csaf_otUS
Hikvision DS-2CD2xx0F-I Series5.2.0 build 140721 | → 5.4.0 Build 160401cisa_csaf_otUS
Hikvision DS-2CD2xx2F-I Series5.2.0 build 140721 | → 5.4.0 build 160530cisa_csaf_otUS
Hikvision DS-2CD2xx2FWD Series5.3.1 build 150410 | → 5.4.4 Build 161125cisa_csaf_otUS
Hikvision DS-2CD4xx5 Series5.2.0 build 140721 | → 5.4.0 Build 160421cisa_csaf_otUS
Hikvision DS-2CD63xx Series5.0.9 build 140305 | → 5.3.5 Build 160106cisa_csaf_otUS
Hikvision DS-2DFx Series5.2.0 build 140805 | → 5.4.5 Build 160928cisa_csaf_otUS
n/a Hikvision Cameras≤ Hikvision Camerasenisa_euvdEU
Hangzhou Hikvision Digital Technology Co., Ltd. DS- 2CD4x2xFWD≤ 5.4.5 Build 170228fstec_bduRU
Hangzhou Hikvision Digital Technology Co., Ltd. DS-2CD2xx0F-I≤ 5.4.5 Build 170123fstec_bduRU
Hangzhou Hikvision Digital Technology Co., Ltd. DS-2CD2xx2F-I≤ 5.4.5 build 170123fstec_bduRU
Hangzhou Hikvision Digital Technology Co., Ltd. DS-2CD2xx2FWD≤ 5.4.5 Build 170124fstec_bduRU
Hangzhou Hikvision Digital Technology Co., Ltd. DS-2CD4xx5≤ 5.4.5 Build 170302fstec_bduRU

showing 20 of 80

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-17-124-01Hikvision Cameras2017-05-04icsa · cisa_csaf_otUS
ATTENTION: Remotely exploitable/low skill level to exploit.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot NVD CVE.org MITRE

published 2017-05-06modified 2026-06-17

related (7,714)

Related entries.

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An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, ma…
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+7709 more

references (14)

External citations — patches, advisories, analysis.

http://www.hikvision.com/us/about_10805.html cnnvd
https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 cnnvd
http://www.hikvision.com/us/about_10805.html enisa_euvd
http://www.securityfocus.com/bid/98313 enisa_euvd
https://ghostbin.com/paste/q2vq2 enisa_euvd
https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 enisa_euvd
http://www.hikvision.com/us/about_10805.htmlPatchVendor Advisorynvd
http://www.securityfocus.com/bid/98313Broken LinkThird Party AdvisoryVDB Entrynvd

scry

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