CVE-2017-7921

Exp

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.

Published: 2017-05-06 Last update: 2026-04-22 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-7921 is rated Critical Active Threat (99.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 94.23%, 100th percentile). CISA KEV confirms active exploitation (added 2026-03-05) affecting Hikvision / Multiple Products. an authentication bypass (CWE-287) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2017-7921

Name: Hikvision Multiple Products Improper Authentication Vulnerability · CISA KEV detail

Exploit added: 2026-03-05

Action due: 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.

Exploit prediction scoring system (EPSS) score for CVE-2017-7921

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-21 94.27% 94.23% -0.03%
2 2026-03-06 94.10% 94.27% +0.17%
3 2025-11-21 — 94.10% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7921

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2017-7921

Affected software / configurations for CVE-2017-7921

Vendor Product Version Raw CPE
hikvision ds-2cd2032-i_firmware — cpe:2.3:o:hikvision:ds-2cd2032-i_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2112-i_firmware — cpe:2.3:o:hikvision:ds-2cd2112-i_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2132-i_firmware — cpe:2.3:o:hikvision:ds-2cd2132-i_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2212-i5_firmware — cpe:2.3:o:hikvision:ds-2cd2212-i5_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2232-i5_firmware — cpe:2.3:o:hikvision:ds-2cd2232-i5_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2312-i_firmware — cpe:2.3:o:hikvision:ds-2cd2312-i_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2332-i_firmware — cpe:2.3:o:hikvision:ds-2cd2332-i_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2412f-i\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd2412f-i\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2432f-i\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd2432f-i\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2512f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2512f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2532f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2532f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2612f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2612f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2632f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2632f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2712f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2712f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2732f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd2732f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2t32-i3_firmware — cpe:2.3:o:hikvision:ds-2cd2t32-i3_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2t32-i5_firmware — cpe:2.3:o:hikvision:ds-2cd2t32-i5_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd2t32-i8_firmware — cpe:2.3:o:hikvision:ds-2cd2t32-i8_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012f-\(a\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012f-\(a\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012f-\(p\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012f-\(p\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012f-\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012f-\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012fwd-\(a\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012fwd-\(a\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012fwd-\(p\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012fwd-\(p\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4012fwd-\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd4012fwd-\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4024f-\(a\)_firmware — cpe:2.3:o:hikvision:ds-2cd4024f-\(a\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4024f-\(p\)_firmware — cpe:2.3:o:hikvision:ds-2cd4024f-\(p\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4024f-\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd4024f-\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4032fwd-\(a\)_firmware — cpe:2.3:o:hikvision:ds-2cd4032fwd-\(a\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4032fwd-\(p\)_firmware — cpe:2.3:o:hikvision:ds-2cd4032fwd-\(p\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4032fwd-\(w\)_firmware — cpe:2.3:o:hikvision:ds-2cd4032fwd-\(w\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4112f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4112f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4112fwd-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4112fwd-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4124f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4124f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4132fwd-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4132fwd-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212f-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212f-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212fwd-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212fwd-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212fwd-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212fwd-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4212fwd-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4212fwd-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4224f-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4224f-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4224f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4224f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4224f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4224f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4232fwd-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4232fwd-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4232fwd-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4232fwd-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4232fwd-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4232fwd-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4312f-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4312f-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4312f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4312f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4312f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4312f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4324f-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4324f-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4324f-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4324f-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4324f-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4324f-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4332fwd-i\(h\)_firmware — cpe:2.3:o:hikvision:ds-2cd4332fwd-i\(h\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4332fwd-i\(s\)_firmware — cpe:2.3:o:hikvision:ds-2cd4332fwd-i\(s\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd4332fwd-i\(z\)_firmware — cpe:2.3:o:hikvision:ds-2cd4332fwd-i\(z\)_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd6412fwd_firmware — cpe:2.3:o:hikvision:ds-2cd6412fwd_firmware:-:*:*:*:*:*:*:*
hikvision ds-2dfx_series_firmware — cpe:2.3:o:hikvision:ds-2dfx_series_firmware:-:*:*:*:*:*:*:*
hikvision ds-2cd63xx_series_firmware — cpe:2.3:o:hikvision:ds-2cd63xx_series_firmware:-:*:*:*:*:*:*:*

References for CVE-2017-7921

URL Tags
http://www.hikvision.com/us/about_10805.html Patch Vendor Advisory
http://www.securityfocus.com/bid/98313 Third Party Advisory VDB Entry Broken Link
https://ghostbin.com/paste/q2vq2 Broken Link
https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01 Third Party Advisory US Government Resource
https://www.hikvision.com/cn/support/CybersecurityCenter/SecurityNotices/20170314/ Third Party Advisory
https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification--privilege-escalating-vulnerability-in-cer/ Third Party Advisory
https://www.hikvision.com/us-en/support/document-center/special-notices/privilege-escalating-vulnerability-in-certain-hikvision-ip-cameras/ Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7921 US Government Resource
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