CVE-2026-70351

Integer overflow or wraparound in Microsoft WebP Image Extension allows an unauthorized attacker to execute code over a network.

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-25)

CWEs

CWE-122, CWE-190

Published

2026-09-08

Modified

2026-09-29

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:webp_image_extension

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70351

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