Recorded 29 Oct 2026 at 15:26 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.

The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.

CVEMicrosoft Security Response Center

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

What it said

CVE: CVE-2026-88078
Severity: Moderate
CVSS base score: 4.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C
Impact: Spoofing
Exploitation detected: Not reported by MSRC
Publicly disclosed: No
Exploitability: Exploitation Less Likely
Component: Microsoft Edge (Chromium-based)
Weakness: CWE-347: Improper Verification of Cryptographic Signature
Issued by: Microsoft
Customer action: Required: apply the update
Affected products: Microsoft Edge (Chromium-based)
Updates that fix it: No KB listed
CISA KEV: Not listed in the collected catalog
EPSS: Not scored
Public exploit code: No Nuclei template listed
Published: 27 Oct 2026 07:00 UTC
Last revised: 29 Oct 2026 07:00 UTC
Revision note: CWE added. Informational change only.

Recorded links

Source evidence when recorded

Microsoft security releases: Complete at observationRead 29 Oct 2026 at 15:24 UTC
CISA KEV: Complete at observationRead 29 Oct 2026 at 15:24 UTC
FIRST EPSS: Complete at observationRead 29 Oct 2026 at 15:24 UTC
Public detection templates (Nuclei): Complete at observationRead 29 Oct 2026 at 15:24 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

Publisher revision note: Information published. → CWE added. Informational change only.
29 Oct 2026

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (5)

Up to 100 recent field edits are shown; older edits may be outside retention.

29 Oct 2026 · 15:26:56 UTC Revision noteInformation published. → CWE added. Informational change only.
29 Oct 2026 · 15:26:56 UTC Last revised27 Oct 2026 07:00 UTC → 29 Oct 2026 07:00 UTC
29 Oct 2026 · 15:26:56 UTC WeaknessNot stated → CWE-347: Improper Verification of Cryptographic Signature
29 Oct 2026 · 15:26:56 UTC ExploitabilityNot assessed → Exploitation Less Likely
29 Oct 2026 · 15:26:56 UTC SummaryMicrosoft Edge (Chromium-based) Spoofing Vulnerability → Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.