VIR Vulnerability Intelligence Relay

CVE-2026-33819

critical
Published 2026-04-23 · Modified 2026-05-05
CVSS v3
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
—
VIR risk
9.8

Description

Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.

Predictions

Exploit likelihood
97%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: secure@microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33819

Application impact
VendorProductVersionsFixed
windows microsoftbing-

References

CWEs

CWE-502

Verify integrity in audit chain (admin only). AS-IS.