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,…
- 9.8CriticalCVSS base score
- 100.0%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- YesKnown exploitedin CISA's KEV since 5 Mar 2026
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Hikvision Multiple Products Improper Authentication Vulnerability.
- Added
- 5 Mar 2026
- Fix due (US federal)
- 26 Mar 2026
- Used by ransomware
- Not known
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 5 Mar 2026.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Metasploit modules and a Nuclei template for it. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits3
Metasploit modules2 modules
- Hikvision IP Camera Unauthenticated Password Change Via Improper Authentication Logic (Metasploit module) (opens in a new tab)
auxiliary/admin/http/hikvision_unauth_pwd_reset_cve_2017_7921Rank normaldisclosed 23 Sept 2017
- Unauthenticated information disclosure such as configuration, credentials and camera snapshots of a vulnerable Hikvision IP Camera (Metasploit module) (opens in a new tab)
auxiliary/gather/hikvision_info_disclosure_cve_2017_7921Rank normaldisclosed 23 Sept 2017
Nuclei templates1 template
- Hikvision - Authentication Bypass (Nuclei template) (opens in a new tab)
http/cves/2017/CVE-2017-7921.yamlSeverity critical
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By icscert
- 18 days later
· 18 days later
Published
- 9 years later
· 9 years later
Added to CISA KEV
Known exploited in the wild
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 100.0% · top 0.1% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Hikvision Cameras
- affected Hikvision Cameras
References
8
- https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 (opens in a new tab)x_refsource_MISCx_transferred
- 98313 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://ghostbin.com/paste/q2vq2 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.hikvision.com/us/about_10805.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.hikvision.com/us-en/support/document-center/special-notices/privilege-escalating-vulnerability-in-certain-hikvision-ip-cameras/ (opens in a new tab)
- https://www.hikvision.com/cn/support/CybersecurityCenter/SecurityNotices/20170314/ (opens in a new tab)
- https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification--privilege-escalating-vulnerability-in-cer/ (opens in a new tab)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7921 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-16892 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-7921)Record last updated .