CVE-2020-7308Network attack vector

GTI response spoofing via cleartext DNS lookups

Published Apr 15, 2021 · Updated Aug 4, 2024

Cleartext DNS in McAfee Endpoint Security for Windows before 10.7.0 February 2021 Update allows remote attackers to read or alter GTI traffic. The GTI reputation channel sends ENS requests and server responses as unencrypted DNS traffic, exposing both content and reply integrity to an intermediary. Exploitation requires control of an intermediate DNS server or the endpoint's network DNS configuration; it discloses queries and permits forged GTI replies.

CVSS severity6.5
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext DNS in McAfee Endpoint Security for Windows before 10.7.0 February 2021 Update allows remote attackers to read or alter GTI traffic. The GTI reputation channel sends ENS requests and server responses as unencrypted DNS traffic, exposing both content and reply integrity to an intermediary. Exploitation requires control of an intermediate DNS server or the endpoint's network DNS configuration; it discloses queries and permits forged GTI replies.

The record

CVE
CVE-2020-7308
Published
Apr 15, 2021
Updated
Aug 4, 2024
Vendor
McAfee
Product
McAfee Endpoint Security for Windows
Classifications
CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <10.7.0 February 2021 Update

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

McAfee · McAfee Endpoint Security for Windowsversion=unspecified <10.7.0 February 2021 Update

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
4.8TrellixCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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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