CVE-2025-11458Network attack vector

Out-of-bounds heap read via crafted HTML

Published Nov 6, 2025 · Updated Nov 6, 2025

Heap buffer overflow in Google Chrome Sync before 141.0.7390.65 allows remote attackers to read out-of-bounds heap memory via crafted HTML. Google identifies the Sync component but has not published the named code locus or exact operation that crosses the heap-buffer boundary. Exploitation requires a user to open attacker-controlled content, and the published CVE impact is limited to reading memory outside the intended buffer.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Google Chrome Sync before 141.0.7390.65 allows remote attackers to read out-of-bounds heap memory via crafted HTML. Google identifies the Sync component but has not published the named code locus or exact operation that crosses the heap-buffer boundary. Exploitation requires a user to open attacker-controlled content, and the published CVE impact is limited to reading memory outside the intended buffer.

The record

CVE
CVE-2025-11458
Published
Nov 6, 2025
Updated
Nov 6, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-122, CWE-787, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=141.0.7390.65 <141.0.7390.65

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=141.0.7390.65 <141.0.7390.65

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
T1189Drive-by Compromise

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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