CVE-2022-38164Network attack vector

Phishing via truncated long-subdomain URLs

Published Nov 7, 2022 · Updated Oct 27, 2024

URL spoofing in F-Secure Internet Security Browser 19.0 and earlier allows remote attackers to disguise a malicious site's address. The address bar displays only part of an overlong URL containing a crafted long subdomain, hiding the full destination from the user. Exploitation requires a user to open the crafted website and supports phishing by making the displayed address appear trustworthy; no content modification or code execution is reported.

CVSS severity6.5
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

URL spoofing in F-Secure Internet Security Browser 19.0 and earlier allows remote attackers to disguise a malicious site's address. The address bar displays only part of an overlong URL containing a crafted long subdomain, hiding the full destination from the user. Exploitation requires a user to open the crafted website and supports phishing by making the displayed address appear trustworthy; no content modification or code execution is reported.

The record

CVE
CVE-2022-38164
Published
Nov 7, 2022
Updated
Oct 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 27, 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

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1204.001Malicious Link

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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