CVE-2026-88077: Integer Overflow

Q: What access does an attacker need to exploit this vulnerability?

The vulnerability is rated network-accessible with low attack complexity and requires no privileges. User interaction is required before exploitation can succeed.

Q: What impact could successful exploitation have?

Successful exploitation could allow elevation of privilege. The provided severity vector indicates high potential impact to confidentiality, integrity, and availability.

Q: Is exploitation known to be occurring?

The exploit code maturity is listed as unknown. The available data does not confirm known exploitation.

Published Oct 26, 2026

Updated

Integer overflow or wraparound in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

Other sources

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

— Microsoft

Affected Software

1 affected componentFixes available

Microsoft Edge (Chromium-based)<154.0.4258.62

154.0.4258.62

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 154.0.4258.62

Event History

Oct 26, 2026

CVE Published

via Microsoft·02:00 PM

Data Sourced

via Microsoft·02:00 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What access does an attacker need to exploit this vulnerability?

The vulnerability is rated network-accessible with low attack complexity and requires no privileges. User interaction is required before exploitation can succeed.

What impact could successful exploitation have?

Successful exploitation could allow elevation of privilege. The provided severity vector indicates high potential impact to confidentiality, integrity, and availability.

Is exploitation known to be occurring?

The exploit code maturity is listed as unknown. The available data does not confirm known exploitation.

CVE-2026-88077: Integer Overflow

Other sources

Affected Software

Remediation

Event History

Frequently Asked Questions

What access does an attacker need to exploit this vulnerability?

What impact could successful exploitation have?

Is exploitation known to be occurring?

Company

Resources

Contact

Frequently Asked Questions

What access does an attacker need to exploit this vulnerability?

What impact could successful exploitation have?

Is exploitation known to be occurring?