CVE-2026-56645

⚠️ high

Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS Score

8.8

High

EPSS Score

0.6

Exploit Probability

Published Date

2026-07-03

First Seen: 2026-07-04

This CVE is High Risk - more severe than 81.1% of all 338,292 vulnerabilities in our database.

#64,055

Top 25% most severe

Severity Percentile

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-07-07

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-122

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
microsoft	edge_chromium	Affected	< 150.0.4078.48

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-57980	🔶 medium	5.4	0.2	Authentication bypass using an alternate path or channel in Microsoft Edge (Chromium-based) allows an unauthorized attac...	2026-07-17
CVE-2026-58596	⚠️ high	8.3	0.5	Untrusted pointer dereference in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges o...	2026-07-12
CVE-2026-58281	⚠️ high	8.3	0.7	Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code ove...	2026-07-11
CVE-2026-58525	⚠️ high	8.2	0.4	Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature ...	2026-07-08
CVE-2026-45488	🔶 medium	5.4	0.3	User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized ...	2026-07-03
CVE-2026-45489	🔶 medium	6.5	0.5	Microsoft Edge (Chromium-based) Spoofing Vulnerability	2026-07-03

These CVEs affect the same products