CVE-2021-25419Public exploitNetwork attack vector

Origin spoofing via truncated data URI prefix

Published Jun 11, 2021 · Updated Aug 3, 2024

URL spoofing in Samsung Internet before 14.0.1.62 allows remote attackers to display a fake origin after a user opens a crafted data URI. The address bar renders only the trailing characters of a long data URI, hiding its data: prefix and presenting attacker-chosen text as an HTTPS origin. Exploitation requires the user to open the link in a new tab or paste the URI, enabling convincing phishing without reported data access or code execution.

CVSS severity6.5
Medium
EPSS probability0.76%
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 Samsung Internet before 14.0.1.62 allows remote attackers to display a fake origin after a user opens a crafted data URI. The address bar renders only the trailing characters of a long data URI, hiding its data: prefix and presenting attacker-chosen text as an HTTPS origin. Exploitation requires the user to open the link in a new tab or paste the URI, enabling convincing phishing without reported data access or code execution.

The record

CVE
CVE-2021-25419
Published
Jun 11, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics
Product
Samsung Internet
Classifications
CWE-703, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 <14.0.1.62

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Samsung Electronics · Samsung Internetversion=unspecified <14.0.1.62

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 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-703Improper Check or Handling of Exceptional Conditions
T1204.001User Execution: Malicious Link

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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