CVE-2026-62898 — HIGH (7.5)

Q: What is CVE-2026-62898?

CVE-2026-62898 is a vulnerability with a CVSS score of 7.5 (HIGH). Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

Q: How severe is CVE-2026-62898?

CVE-2026-62898 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-62898?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Visual Studio 2022, Microsoft Visual Studio 2026, Microsoft .Net.

Vulnerability Description

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

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Visual Studio 2022	>= 17.14.0, < 17.14.38
Microsoft	Visual Studio 2026	>= 18.8.0, < 18.8.3
Microsoft	.Net	>= 8.0.0, < 8.0.30

Related Weaknesses (CWE)

CWE-416

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898PatchVendor Advisory

FAQ

What is CVE-2026-62898?

CVE-2026-62898 is a vulnerability with a CVSS score of 7.5 (HIGH). Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

How severe is CVE-2026-62898?

CVE-2026-62898 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-62898?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Visual Studio 2022, Microsoft Visual Studio 2026, Microsoft .Net.