4.3
MediumCVSS 3.1 · from microsoft
CVE-2026-88078
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Microsoft Edge (Chromium-based) · CWE-347 · CWE-347AffectedMicrosoft Edge (Chromium-based)
FixUpdate to 156.0.4314.42 or newer
PublishedOct 29, 15:21 · microsoft
ScoredOct 29 · 4.3 · microsoft
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:07 UTC
What we know
No known exploitation. CISA KEV, checked 22:07 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
Someone has to open, click or run something first. CVSS: user interaction required.
Description
Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
From microsoft
Affected and fixed versions
ProductAffectedFixed inMicrosoft Edge (Chromium-based)1.0.0.0 – before 156.0.4314.42156.0.4314.42
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known