CVE-2017-7921 (GCVE-0-2017-7921)
Vulnerability from cvelistv5 – Published: 2017-05-06 00:00 – Updated: 2026-03-06 05:01Summary
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)
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
8 references
| URL | Tags |
|---|---|
| https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 | x_refsource_MISC |
| http://www.securityfocus.com/bid/98313 | vdb-entryx_refsource_BID |
| https://ghostbin.com/paste/q2vq2 | x_refsource_MISC |
| http://www.hikvision.com/us/about_10805.html | x_refsource_MISC |
| https://www.hikvision.com/us-en/support/document-… | |
| https://www.hikvision.com/cn/support/Cybersecurit… | |
| https://www.hikvision.com/en/support/cybersecurit… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| 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
Exploited: Yes
Timestamps
First Seen: 2026-03-05
Asserted: 2026-03-05
Scope
Notes: 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: 2026-11-04 13:34 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 359d5740-171e-45a1-ad87-283811cfe5b9
Exploited: Yes
Characteristics
Severity:
100.0
Timestamps
First Seen: 2023-10-16
Asserted: 2023-10-16
Last Seen: 2026-11-10
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 2026-11-10: 5
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 1 |
|---|---|
| Iot | yes |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | video-system |
| 7D Avg | 1 |
| Vendor | Hikvision |
| 30D Avg | 3 |
| 90D Avg | 2 |
| Product | Hikvision DS series multiple products |
| Cisa Kev | yes |
| Connections | 5 |
| Observation Date | 2026-11-10 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 10 |
| Vulnerability Severity | Critical |
References
Created: 2026-06-30 09:23 UTC
| Updated: 2026-11-12 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0e2f86bb-b7ef-4ef4-8a35-5e9d8cd3785f
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 |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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"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."
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"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."
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"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."
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.