PatchTheCVECVE-2026-42891: User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an una
CVE-2026-42891 is a medium-severity flaw (CVSS 6.5) affecting edge chromium. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Why this priority
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 79%) |
| CISA exploited list | No |
| Weakness | CWE-451 |
| Published | 2026-05-12 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-42891?
edge chromium: upgrade to 148.0.3967.55. Exact commands for each OS are on this page.
Is CVE-2026-42891 being exploited?
CVE-2026-42891 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-42891 affect?
CVE-2026-42891 affects edge chromium. Severity is medium (CVSS 6.5). User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
How urgent is CVE-2026-42891?
Priority 38/100. Remotely exploitable, no login, no user action; On your watchlist
Software pages
Microsoft Edge vulnerabilities · Chromium vulnerabilities
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