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High CVSS 8.3

CVE-2026-72970

Microsoft Edge Chromium

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

What this means

Exposure
Exploitable remotely over the network and without authentication — but only if a user opens booby-trapped content.
Impact
An attacker can read sensitive data, modify or destroy data and degrade the service.
Weakness
A heap overflow corrupts allocator structures and can lead to code execution.
Likelihood
Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.

What to doFold into the next patch cycle.

Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.

Published
14 August 2026
CVSS
8.3 (v3.1) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
EPSS
0.53% probability of exploitation within 30 days · above 43% of all CVEs
Weakness
CWE-122
Sources
nvd
References

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