CVE-2017-7921Known exploitationPublic exploitNetwork attack vector

Unauthenticated data access via auth query bypass

Published May 6, 2017 · Updated Mar 6, 2026

Authentication bypass in Hikvision IP camera firmware allows remote attackers to read protected data via crafted HTTP requests. The web interface accepts a crafted base64-encoded auth query parameter as authorization for protected routes, including /System/configurationFile. Network access to an affected camera is sufficient; no valid account or user interaction is required, and downloaded configuration data exposes user information.

CVSS severity9.8
Critical
EPSS probability100.00%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Hikvision IP camera firmware allows remote attackers to read protected data via crafted HTTP requests. The web interface accepts a crafted base64-encoded auth query parameter as authorization for protected routes, including /System/configurationFile. Network access to an affected camera is sufficient; no valid account or user interaction is required, and downloaded configuration data exposes user information.

The record

CVE
CVE-2017-7921
Published
May 6, 2017
Updated
Mar 6, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2017CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 2017Exploitation reportedSANS ISC camera authentication-bypass request observations
  3. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0GitHub Advisory DatabaseCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20262
Sep 23, 2026Unavailable
Sep 24, 2026Unavailable
Sep 25, 2026Unavailable
Sep 26, 20261
Sep 27, 20261
Sep 28, 20261
Latest reporting daySep 28, 2026
Latest daily unique IPs1
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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