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CVE-2026-126840VulnerabilityPublished

Network · Out-of-bounds Write

Source GCVE Database

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Authoritative record:CVE-2026-126840· High

Not known to be exploited : upgrade to 157.0.8103.78 soon.

Data as of 12 Nov 2026, 02:07 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 157.0.8103.78

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade Chrome to 157.0.8103.78.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=157.0.8103.78 <157.0.8103.78
Fixed in
  • 157.0.8103.78

AI-suggested

Users should update Google Chrome to version 157.0.8103.78 or later to remediate this vulnerability. Since the affected versions are prior to 157.0.8103.78, applying this official fix eliminates the risk. No other mitigation guidance is provided.

Description

An out-of-bounds write vulnerability exists in the Network component of Google Chrome versions prior to 157.0.8103.78. This flaw could allow a remote attacker to execute arbitrary code within the sandbox by tricking a user into visiting a specially crafted HTML page. The issue is classified with high severity by Chromium security.

References

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