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CVE-2017-7921 (GCVE-0-2017-7921)

Vulnerability from cvelistv5 – Published: 2017-05-06 00:00 – Updated: 2026-03-06 05:01
VLAI CISA Shadowserver Previdian
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 00:00 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a Hikvision Cameras Affected: Hikvision Cameras
Date Public
2017-05-05 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e651cd03-3d09-4248-ad89-47ab28588441

Vulnerability ID: CVE-2017-7921

Status: Confirmed

Status Updated: 2026-03-05 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-03-05
Asserted: 2026-03-05
Scope
Notes: KEV entry: Hikvision Multiple Products Improper Authentication Vulnerability | Affected: Hikvision / Multiple Products | 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. | 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. | Due date: 2026-03-26 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.hikvision.com/us-en/support/document-center/special-notices/privilege-escalating-vulnerability-in-certain-hikvision-ip-cameras/ ; https://nvd.nist.gov/vuln/detail/CVE-2017-7921
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-287
Feed CISA Known Exploited Vulnerabilities Catalog
Product Multiple Products
Due Date 2026-03-26
Date Added 2026-03-05
Vendorproject Hikvision
Vulnerabilityname Hikvision Multiple Products Improper Authentication Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-03-05 20:00 UTC | Updated: 2026-03-05 20:00 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 359d5740-171e-45a1-ad87-283811cfe5b9

Vulnerability ID: CVE-2017-7921

Status: Confirmed

Status Updated: 2026-07-20 00:00 UTC

Exploited: Yes

Characteristics
Severity: 100.0
Timestamps
First Seen: 2023-10-16
Asserted: 2023-10-16
Last Seen: 2026-07-20
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Hikvision / Hikvision DS series multiple products | Class: video-system | Severity: Critical (CVSS 10) | IoT: yes | In CISA KEV: yes | Honeypot connections on 2026-07-20: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class video-system
7D Avg 1
Vendor Hikvision
30D Avg 1
90D Avg 1
Product Hikvision DS series multiple products
Cisa Kev yes
Connections 2
Observation Date 2026-07-20
Vulnerability Class CVSS
Vulnerability Score 10
Vulnerability Severity Critical
References
Created: 2026-06-30 09:23 UTC | Updated: 2026-07-22 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0e2f86bb-b7ef-4ef4-8a35-5e9d8cd3785f

Vulnerability ID: CVE-2017-7921

Status: Confirmed

Status Updated: 2026-06-01 11:37 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: 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... | Affected: Hikvision / DS-2CD2xx2F-I Series, DS-2CD2xx0F-I Series, DS-2CD2xx2FWD Series, DS-2CD4x2xFWD Series, DS-2CD4xx5 Series, DS-2DFx Series, DS-2CD63xx Series | CVSS: 9.8 (CRITICAL) | EPSS: 0.99998 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor Hikvision
Product DS-2CD2xx2F-I Series, DS-2CD2xx0F-I Series, DS-2CD2xx2FWD Series, DS-2CD4x2xFWD Series, DS-2CD4xx5 Series, DS-2DFx Series, DS-2CD63xx Series
Added Date 2026-06-01T11:37:59.079Z
Cvss Score 9.8
Epss Score 0.99998
Cvss Severity CRITICAL
Epss Percentile 0.99989
Used In Malware unknown
Ahead Of Cisa Kev 
{
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}
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"Se detect\\u00f3 un problema de autenticaci\\u00f3n inapropiada en dispositivos DS-2CD2xx2F-I Series versiones V5.2.0 build 140721 hasta V5.4.0 build 160530, DS-2CD2xx0F-I Series versiones V5.2.0 build 140721 hasta V5.4.0 build 160530, DS-2CD2xx0F-I Series versiones V5.2.0 build 140721 hasta V5.4.0 build 160530, DS-2CD2xx0F-I Series versiones V5.2.0 build 140721 hasta V5.4.0 Build 160401, DS-2CD2xx2FWD Series versiones V5.3.1 build 150410 hasta V5.4.4 Build 161125, DS-2CD4x2xFWD Series versiones 5.2.0 build 140721 hasta V5.4.0 Build 160414, DS-2CD4xx5 Series versiones 5.2.0 build 140721 hasta V5.4.0 Build 160421, DS-2DFx Series versiones 5.2.0 build 140805 hasta V5.4.5 Build 160928 y Serie DS-2CD63xx versi\\u00f3n 5.0.9 build 140305 hasta versi\\u00f3n V5.3.5 Build 160106 de Hikvision. La vulnerabilidad de autenticaci\\u00f3n inapropiada ocurre cuando una aplicaci\\u00f3n no autentica adecuada o apropiadamente a los usuarios. Esto puede permitir a un usuario malicioso escalar sus privilegios en el sistema y conseguir acceso a informaci\\u00f3n confidencial.\"}]",
      "id": "CVE-2017-7921",
      "lastModified": "2024-12-27T21:15:06.250",
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      "published": "2017-05-06T00:29:00.350",
      "references": "[{\"url\": \"http://www.hikvision.com/us/about_10805.html\", \"source\": \"ics-cert@hq.dhs.gov\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/98313\", \"source\": \"ics-cert@hq.dhs.gov\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://ghostbin.com/paste/q2vq2\", \"source\": \"ics-cert@hq.dhs.gov\"}, {\"url\": \"https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01\", \"source\": \"ics-cert@hq.dhs.gov\", \"tags\": [\"Third Party Advisory\", \"US Government Resource\"]}, {\"url\": \"http://www.hikvision.com/us/about_10805.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/98313\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://ghostbin.com/paste/q2vq2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"US Government Resource\"]}, {\"url\": \"https://www.hikvision.com/cn/support/CybersecurityCenter/SecurityNotices/20170314/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification--privilege-escalating-vulnerability-in-cer/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.hikvision.com/us-en/support/document-center/special-notices/privilege-escalating-vulnerability-in-certain-hikvision-ip-cameras/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "ics-cert@hq.dhs.gov",
      "vulnStatus": "Modified",
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.