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CVE-2026-45489VulnerabilityPublished Updated

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Affects Microsoft Edge (Chromium-based)Source GCVE Database

0
Authoritative record:CVE-2026-45489· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium : upgrade to 150.0.4078.48 when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 150.0.4078.48
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade Microsoft Edge (Chromium-based) to 150.0.4078.48.

Affected software

ProductAffectedFixed in
MicrosoftMicrosoft Edge (Chromium-based)Affected
  • >=1.0.0.0 <150.0.4078.48
Fixed in
  • 150.0.4078.48

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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