CVE-2026-33819

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

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-26)

CWE

CWE-502

Published

2026-04-23

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• microsoft:bing

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33819

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