CVE-2019-16893Public exploitNetwork attack vector

Unauthenticated reboot via unprotected management endpoint

Published Feb 3, 2020 · Updated Aug 5, 2024

Missing authentication in TP-Link TP-SG105E V4 1.0.0 Build 20181120 allows remote attackers to reboot the switch via HTTP. The web management service exposes reboot.cgi without an authentication check and honors a POST containing reboot_op=reboot. Network reachability to the management interface is the only reported gate, and successful exploitation interrupts switching service through a device reboot.

CVSS severity7.5
High
EPSS probability37.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in TP-Link TP-SG105E V4 1.0.0 Build 20181120 allows remote attackers to reboot the switch via HTTP. The web management service exposes reboot.cgi without an authentication check and honors a POST containing reboot_op=reboot. Network reachability to the management interface is the only reported gate, and successful exploitation interrupts switching service through a device reboot.

The record

CVE
CVE-2019-16893
Published
Feb 3, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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

7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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