What is CVE-2026-62898?

CVE-2026-62898 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.14, classified under Use After Free. CVSS score: 7.5/10. Published 2026-08-11.

How severe is CVE-2026-62898?

High severity. CVSS v3 base score is 7.5 out of 10.

Use After Free in Microsoft Visual Studio 2022 Version 17.14

CVE-2026-62898

Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Microsoft Visual Studio 2022 Version 17.14 — versions 17.14.0
Microsoft Visual Studio 2026 Version 18.8 — versions 18.0
Microsoft .Net 10.0 — versions 10.0.0
Microsoft .Net 8.0 — versions 8.0.0
Microsoft .Net 9.0 — versions 9.0.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

Microsoft QUIC Information Disclosure Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-62898?: CVE-2026-62898 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.14, classified under Use After Free. CVSS score: 7.5/10. Published 2026-08-11.
How severe is CVE-2026-62898?: High severity. CVSS v3 base score is 7.5 out of 10.