CVE-2019-25154Network attack vector

Sandbox escape via improper iframe handling

Published Jul 16, 2024 · Updated Nov 21, 2024

Improper iframe handling in Google Chrome before 77.0.3865.75 allows remote attackers to escape the sandbox via crafted HTML. Google has not published which iframe operation mishandles the page or how the sandbox boundary is crossed. Exploitation requires loading attacker-controlled HTML; the disclosed consequence is escape from the browser sandbox.

CVSS severity9.6
Critical
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper iframe handling in Google Chrome before 77.0.3865.75 allows remote attackers to escape the sandbox via crafted HTML. Google has not published which iframe operation mishandles the page or how the sandbox boundary is crossed. Exploitation requires loading attacker-controlled HTML; the disclosed consequence is escape from the browser sandbox.

The record

CVE
CVE-2019-25154
Published
Jul 16, 2024
Updated
Nov 21, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 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=77.0.3865.75 <77.0.3865.75

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=77.0.3865.75 <77.0.3865.75

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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