CVE-2020-9375Public exploitNetwork attack vector

Unauthenticated web-interface crash via malformed Referer

Published Mar 25, 2020 · Updated Mar 5, 2026

Denial-of-service in TP-Link Archer C50 V3 before Build 200318 Rel. 62209 allows remote attackers to interrupt the web interface via crafted HTTP headers. The web interface mishandles an unexpected Referer header, causing the HTTP service on port 80 to crash and close. Any remote network client can trigger the condition without authentication; restoring access requires a router reboot, with availability impact only.

CVSS severity7.5
High
EPSS probability26.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial-of-service in TP-Link Archer C50 V3 before Build 200318 Rel. 62209 allows remote attackers to interrupt the web interface via crafted HTTP headers. The web interface mishandles an unexpected Referer header, causing the HTTP service on port 80 to crash and close. Any remote network client can trigger the condition without authentication; restoring access requires a router reboot, with availability impact only.

The record

CVE
CVE-2020-9375
Published
Mar 25, 2020
Updated
Mar 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-772, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2020CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record 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

7.8NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
T1499.004Endpoint Denial of Service: Application Layer Protocol

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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