CyberSecBulletin
CVE-2026-11153NVD status: Analyzed

Chrome: Improper Protection of Physical Side Channels

Published Updated By the CyberSecBulletin desk

CVE-2026-11153 is a critical-severity improper protection of physical side channels vulnerability in Chrome from Google, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 149.0.7827.53 as the first without the flaw, so updating Chrome to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.26% chance of exploitation within 30 days, which is low compared with other CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Update Chrome to 149.0.7827.53 or a later version.
  2. Read the advisory on chromereleases.googleblog.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
GoogleChrome149.0.7827.53 up to, but not including, 149.0.7827.53149.0.7827.53

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. Scored by CISA (ADP).

Official description

Side-channel information leakage in Forms in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Protection of Physical Side Channels

The device does not contain sufficient protection mechanisms to prevent physical side channels from exposing sensitive information due to patterns in physically observable phenomena such as variations in power consumption, electromagnetic emissions (EME), or acoustic emissions.

How developers prevent this class of flaw

  • Apply blinding or masking techniques to implementations of cryptographic algorithms.
  • Add shielding or tamper-resistant protections to the device to increase the difficulty of obtaining measurements of the side-channel.

More Improper Protection of Physical Side Channels vulnerabilities (CWE-1300)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other references

Other vulnerabilities in Chrome

All Chrome vulnerabilities

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